concavity
121Vowel point — Point Point, n. [F. point, and probably also pointe, L. punctum, puncta, fr. pungere, punctum, to prick. See {Pungent}, and cf. {Puncto}, {Puncture}.] 1. That which pricks or pierces; the sharp end of anything, esp. the sharp end of a piercing… …
122oyster — noun Usage: often attributive Etymology: Middle English oistre, from Anglo French, from Latin ostrea, from Greek ostreon; akin to Greek ostrakon shell, osteon bone more at osseous Date: 13th century 1. a. any of various marine bivalve mollusks… …
123concha — I. noun (plural conchae) Etymology: Italian & Latin; Italian conca semidome, apse, from Late Latin concha, from Latin, shell Date: circa 1639 1. a. the plain semidome of an apse b. apse 2. something shaped like a shell; especially the largest and …
124cove — I. noun Etymology: Middle English, den, from Old English cofa; akin to Old High German chubisi hut Date: before 12th century 1. a recessed place ; concavity: as a. an architectural member with a concave cross section b. a trough for concealed… …
125dish — I. noun Etymology: Middle English, from Old English disc plate, from Latin discus quoit, disk, dish, from Greek diskos, from dikein to throw Date: before 12th century 1. a. a more or less concave vessel from which food is served b. the contents… …
126Absolute value — For the philosophical term, see Value (ethics). For the Akrobatik album, see Absolute Value (album). In mathematics, the absolute value (or modulus) |a| of a real number a is the numerical value of a without regard to its sign. So, for example,… …
127Calculus — This article is about the branch of mathematics. For other uses, see Calculus (disambiguation). Topics in Calculus Fundamental theorem Limits of functions Continuity Mean value theorem Differential calculus  Derivative Change of variables …
128Crossbow — This article is about the weapon. For other uses, see Crossbow (disambiguation). Sketch by Leonardo da Vinci, c. 1500 A crossbow is a weapon consisting of a bow mounted on a stock that shoots projectiles, often called bolts or quarrels. The… …
