biconvex
|bi-con-vex|
🇺🇸
/ˌbaɪkənˈvɛks/
🇬🇧
/ˌbaɪkɒnˈvɛks/
convex on both sides
Etymology
'biconvex' originates from scientific English formation combining the prefix 'bi-' from Latin 'bis' meaning 'two' with 'convex,' from Latin 'convexus' meaning 'arched; rounded.'
'biconvex' was coined in New Latin/Modern scientific English by adding 'bi-' to 'convex.' The word 'convex' entered English via Middle English from Old French 'convexe,' ultimately from Latin 'convexus.'
Initially, it meant 'convex on both sides (especially of a lens),' and this meaning has largely remained the same in modern usage.
Meanings by Part of Speech
Adjective 1
convex on both surfaces; having two outwardly curved faces (especially of a lens).
A biconvex lens converges parallel light rays to a focal point.
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Adjective 2
convex on both sides in form, as of certain seeds or anatomical structures.
The seed is biconvex with a slight ridge around the margin.
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Last updated: 2025/08/11 17:24