| biconvex | (adjective) convex on both sides; shaped like a lentil | Synonyms: convexo-convex, lenticular, lentiform |
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| convex | (adjective) curving or bulging outward | Synonyms: bulging |
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| planoconvex | (adjective) flat on one side and convex on the other | - |
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| silvex | (noun) a herbicide that is effective in controlling woody plants but is toxic to animals | - |
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| vex | (verb) be a mystery or bewildering to | Synonyms: amaze, baffle, beat, bewilder, dumbfound, flummox, get, gravel, mystify, nonplus, perplex, pose, puzzle, stick, stupefy |
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| (verb) subject to prolonged examination, discussion, or deliberation | - |
| (verb) change the arrangement or position of | Synonyms: agitate, commove, disturb, raise up, shake up, stir up |
| (verb) cause annoyance in; disturb, especially by minor irritations | Synonyms: annoy, bother, chafe, devil, get at, get to, gravel, irritate, nark, nettle, rag, rile |
| (verb) disturb the peace of mind of; afflict with mental agitation or distress | Synonyms: worry |