One of the mysteries of the English language finally explained.
1Having an outline or surface curved like the exterior of a circle or sphere.‘a convex lens’Compare with concave
curved outwards, camberedView synonyms
- ‘From the level of tooth one to tooth five, the lateral surface is slightly convex.’
- ‘Light enters the human eye via the transparent cornea, the eye's front window, which acts as a powerful convex lens.’
- ‘The exterior walls were composed of concave and convex red bricks.’
- ‘Carve out squares of curving surfaces, concave and convex.’
- ‘Powerful images captured through a convex lens are frozen in time.’
- ‘He likened this to asking an artisan to explain how the convex surface of a peg can possibly fill that of a concave hole.’
- ‘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 water column was lowered over the dry grains until the convex surface just touched them.’
- ‘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.’
- ‘The steroid treatment consisted of three implants per ear inserted subcutaneously on the convex surface of the ear.’
- ‘This particular beach is many miles long and shaped like a new moon, a convex curve extending into the Gulf of Mexico.’
- ‘Sometimes, highlighted down the middle where the trees grew tall, the surface could look convex.’
- ‘It weighs 440 g. One surface is smoothly convex and may have been used as a grinding stone.’
- ‘Ridges on the convex surface are not as well developed as those on the flat surface.’
- ‘Surprised, Jeana turned to look at her reflection in the mirror with the convex surface.’
- ‘Galileo's telescope had a convex object lens but a concave eye-piece.’
- ‘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.’
- ‘For the ceiling, he ‘proposed a series of convex surfaces,’ lowered toward the front.’
- ‘With water the surface is concave, with mercury it is convex.’
2(of a polygon) not having any interior angles greater than 180°.
- ‘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.’
- ‘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.’
Late 16th century: from Latin convexus ‘vaulted, arched’.
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