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‘He likened this to asking an artisan to explain how the convex surface of a peg can possibly fill that of a concave hole.’
‘It weighs 440 g. One surface is smoothly convex and may have been used as a grinding stone.’
‘Powerful images captured through a convex lens are frozen in time.’
‘For the ceiling, he ‘proposed a series of convex surfaces,’ lowered toward the front.’
‘The exterior walls were composed of concave and convex red bricks.’
‘This particular beach is many miles long and shaped like a new moon, a convex curve extending into the Gulf of Mexico.’
‘Through the convex lens these frozen moments in time are of the other ‘side’.’
‘Go for a nice belly in the blade - a nice convex curve seriously improves cutting.’
‘Light enters the human eye via the transparent cornea, the eye's front window, which acts as a powerful convex lens.’
‘With water the surface is concave, with mercury it is convex.’
‘The tongue normally offers a convex surface to the roof of the mouth: for an r-sound, the tongue surface is often hollowed out and the tip raised.’
‘The steroid treatment consisted of three implants per ear inserted subcutaneously on the convex surface of the ear.’
‘Ridges on the convex surface are not as well developed as those on the flat surface.’
‘Sometimes, highlighted down the middle where the trees grew tall, the surface could look convex.’
‘Carve out squares of curving surfaces, concave and convex.’
‘From the level of tooth one to tooth five, the lateral surface is slightly convex.’
‘The water column was lowered over the dry grains until the convex surface just touched them.’
‘Galileo's telescope had a convex object lens but a concave eye-piece.’
‘Surprised, Jeana turned to look at her reflection in the mirror with the convex surface.’
‘While the pillows are still partially molten they are compacted together so that they display convex upper surfaces and downwards-facing cusps at their contacts.’
2(of a polygon) having only interior angles measuring less than 180°
‘However, despite such examples, it is commonly believed that if you restrict yourself to looking at convex polygons, this question has a positive answer.’
‘We used convex polygons to estimate distances between colony centers and the size of each colony to define the area of burrows in use by a family group in a current season.’
‘The 95% minimum convex polygon was estimated for each bird using all sightings.’
‘Calculating the convex polygon for the immature male resulted in an inaccurate representation of his movement patterns.’
‘A convex polygon with a triangle attached to one of its edges in this way is called a barbed polygon.’
Origin
Late 16th century: from Latin convexus ‘vaulted, arched’.