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‘There's a constant background hum of machinery, the sound of switches being flicked and the astronauts around you going about their routines.’
‘Let me tell you about the non-stop insanity, the constant chaos, the perpetual pandemonium.’
‘The constant spin continues to cancel out the effect of gravity, and keeps the wheel upright.’
‘Many systems survive for decades, undergoing constant tweaking and continual evaluation.’
‘It will always need constant regeneration, constant effort, and constant activity to continue.’
‘This initiative should be seen as the right way to treat employees, not an opportunity to continue the constant sniping.’
‘The old fire engines have meant that the staff are subjected to constant breakdowns and are continually looking for spare parts.’
‘Above decks there was constant activity as repairs continued to the newly acquired British ship.’
‘The two voices behind him had continued in a constant drone since he got on.’
‘But his continual torment, his constant wishing to be with the dead, made him certain he could not stand living much longer.’
‘One of the reasons why means are more frequently analysed than ends is because ends are so subjective, contingent, and in constant flux.’
‘In clothes stores, sandwich bars, gyms and coffee shops we face a constant barrage of background music - music we notice but rarely listen to.’
‘The constant noise continually startled Gracie and Leah's work.’
‘In the longer term, sustained improvements in competitiveness require continuous macroeconomic stability and constant vigilance on the part of individual firms.’
‘There's a pirate with a wandering wooden eye who's good for a chuckle, and it's fun to see a pirate tavern where the bar fights are just the constant background noise.’
‘This season he has been troubled by a groin injury and while receiving constant treatment continues to play.’
‘And then the constant repetition and continuous coverage has been astounding.’
‘Yet still his constant writing and reviewing continued.’
‘They are however symbolic of a constant noise in the background.’
‘His mother would be unable to continue her constant harping on his bachelor status.’
‘The number of serious and complicated grievances like infection control issues remained fairly constant throughout the year.’
‘Consequently, the fructose concentrations remained constant during the feeding period and decreased slowly afterwards.’
‘It was 75 degrees outside but the bedrooms remained at a constant minus 10 degrees somehow.’
‘However, the 9 percent difference in speed has remained constant over the years.’
‘It is important to have a continuous and constant flow rate.’
‘Only the ratio of the imports of services to total services produced has remained roughly constant during this period.’
‘Test-retest reliability examines the temporal stability of a measure or how constant scores remain from one occasion to another.’
‘The actual number of people living in dire poverty has remained roughly constant, at about 1.2 billion.’
‘Over short periods of time the growth rates remain virtually constant.’
‘The expansion of the university sector has meant more degree holders, but the number of jobs has remained roughly constant.’
‘He also noted a rise in pupils staying away from school, although truancy rates remain largely constant.’
‘Control bag pH was similar to pH in the lake and remained relatively constant throughout the six-week period.’
‘All definitions remained constant throughout the study period, with the exception of the methodology for counting tests.’
‘Statistics compiled for the Group show that the male suicide rate has more than doubled over the past twenty years while the female rate has remained fairly constant.’
‘Although metabolic rate may decline during this period, protein catabolism probably remained rather constant.’
‘So while the share per head of population remains roughly constant, the share for Scotland as a whole is getting smaller.’
‘However, taste, smell and touch can remain fairly constant well into our seventies and eighties, provided that we don't neglect them.’
‘As previously noted, however, this ratio has remained largely constant for lower-income households as with all others.’
‘The reason why different methods can produce widely different results is because a mobile phone does not produce a continuous, constant radiation level.’
‘According to the report, while government aid has remained fairly constant for college students, tuition increases have outstripped the aid.’
1.2(of a person) unchangingly faithful and dependable.
‘a constant friend’
‘The radio was her constant friend and always at her bedside.’
‘But it didn't seem to matter as much, because I found a constant friend, Madelyn.’
‘He has been my constant companion for over 11 years and a more faithful and devoted one I shall never have.’
‘If your child is ill or you are worried, shout to the rooftops or guilt will walk with you as a constant friend.’
‘At that very road crossing, he had said a tearful good-bye to his constant companion and best friend.’
‘I even found my old friend steamed broccoli, along with his constant companion, baked chicken without the skin.’
‘Jesus has returned to God and now can be present everywhere for all eternity - so he can be our constant friend.’
‘It seemed a good idea to begin with the brush because it was the most constant friend.’
‘Those books are my constant friends and if they look a bit tattered and worn, well, so do I.’
‘Not only would I be leaving my father, I would also be leaving behind my friends, who have been my constant companions since the beginning of my youth.’
‘Her best friend and constant companion is a gay man, Brent.’
‘My constant companions were thoroughly entertained.’
‘Improbably, she helps, and stays around to help more, becoming a constant friend.’
‘They are constant companions - unchanging, unchangeable.’
‘Apprehension is the constant companion of the true lover.’
‘They would waltz in and out of my life at intervals and so I theorized that I got ‘used’ to not having any constant friends around.’
‘Having a good, constant friend is important, and being in a prosocial peer group where one is accepted is even better.’
‘And from a total of 33 constant friends, only half a dozen are ‘bosom buddies’.’
‘For the glitterati, pets very often are their most devoted and constant friends and, therefore, enjoy the best money can buy.’
‘I hope you like them, as they'll be your constant friends until you graduate from this class.’
‘But while the genre has certainly had its ups and downs, one thing has also remained a constant: on the whole, they have gotten better.’
‘The theme of loss has remained a constant for nearly 20 years, as has the basic fictional premise of figures in existential free-fall.’
‘As the international system evolved, some constants remained; notably, this was an era in which states struggled for discrete advantage, not to destroy other states or regimes and not to decide great issues of religion or ideology.’
‘Modes of transport progressed from frontpack to trike to toddling feet as our trio of offspring grew, but the pull-behind grocery cart remained a constant.’
‘They see a hunger for big, high-profile investigations - and the headlines they bring - as the one constant in his case file.’
‘The world may be changing, but play remains a constant.’
‘The story of a young man's alienation from his family, his society or both remains a constant in Canadian cinema.’
‘But the constants remain - Mauao, the beautiful beach and lots of young people.’
‘In any business era, the need to collaborate remains a constant.’
‘There are few constants during a global emergency, but one is that children - the most innocent and vulnerable of all - are among the first to suffer.’
‘In Chennai, over the years, the amount of road space in a given area has remained a constant.’
‘What about the death and poverty that will remain a constant in their lives if war, and the regime change that the war will bring about, does not happen?’
‘Girls come and go but the University of Michigan, for example, remains a constant.’
‘But during the tiny sliver of human history that has seen us attempt to claim the stars as our own, Clarke has remained a bedrock - a constant throughout the struggle.’
‘We have changed our lives in astounding ways since civilization began, and yet commerce has remained a constant.’
‘One characteristic of the Internet that has remained a constant for as long as I have been online is that there is never enough of it.’
‘While the institution of the secret police evolved to suit the needs of the Soviet state, the capacity for cruelty at the top remained a constant.’
‘The story couldn't be convincingly told if there wasn't a convincing constructed context where there are constants, ephemera, characters, events, themes, boundaries, and plot.’
‘Soldier technology will continue to increase; however, some constants must remain in our system.’
‘The one element that remains a constant through them all is the observation of what a nice man he was.’
unchanging factor, unchanging state of affairs, unchanging situation, given
1.1Mathematics A quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.
‘By the ‘subject matter of pure mathematics’ he means the ‘continuous quantity’ of geometry and the numerical values of variables and constants in algebra.’
‘For a summary of all constants and variables used in the model, see Table 1.’
‘He calculated the constant to 16 decimal places.’
‘Since its differences are the same as the Fibonacci series differences, we can add or subtract a constant to the Fibonacci series.’
‘His thesis concerned applying the methods of the theory of quadratic number fields to quadratic extensions of a field of rational functions of one variable taken over a finite prime field of constants.’
1.2Physics A number expressing a relation or property which remains the same in all circumstances, or for the same substance under the same conditions.
‘Thus, to interpret the values, some effective temperature must be chosen and this is accomplished by calibrating the force constants to some known property.’
‘The importance of the constant is that it measures the strength of the electromagnetic interaction.’
‘His comedy is a comedy of physics filled with precise formulas for directional qualities, but without standardized parameters or constants.’
‘The diffraction constant for the diffractometer was calculated using a grating with 0.1 turn spacings.’
‘One of the great goals of fundamental physics is to find the reason for the precise numerical values of the constants that appear in the equations that prescribe the laws of Nature.’
Origin
Late Middle English (in the sense ‘staying resolute or faithful’): from Old French, from Latin constant- ‘standing firm’, from the verb constare, from con- ‘with’ + stare ‘stand’. The noun senses date from the mid 19th century.