biconvex

Example Sentences

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Tube of corolla cylindrical, enlarging above; upper lip arched, compressed, straight in front; the lower erect-spreading, biconvex, 3-lobed at the apex.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa

In 671 Scolopendra, where there are four, the corneal lens is a biconvex thickening of the cuticle.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various

The lens is biconvex in diurnal mammals, but in nocturnal and aquatic it is spherical.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" by Various

I then examined the fittings of this mechanism, whose power was increased a hundredfold by biconvex lenses that were designed like those in a lighthouse and kept its rays productively focused.

From Twenty Thousand Leagues Under the Sea by Walter, F. P.

Convex on both sides; as, a biconvex lens.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah