BOX n.
s, being very hard and smooth, is extensively used in the arts, as by turners, engravers, mathematical instrument makers, etc. Box elder, the ash-leaved maple (Negundo aceroides), of North America. -- Box holly, the butcher's broom (Russus aculeatus). -- Box thorn, a shrub (Lycium barbarum). -- Box tree, the tree va…
CIRCULAR a.
t infinity. -- Circular functions. (Math.) See under Function. -- Circular instruments, mathematical instruments employed for measuring angles, in which the graduation extends round the whole circumference of a circle, or 360º. -- Circular lines, straight lines pertaining to the circle, as sines, tangents, secants,…