FIGURATE a.
whole number, by taking the first term, and the sums of the first two, first three, first four, etc., as the successive terms of a new series, from which another may be formed in the same manner, and so on, the numbers in the resulting series being such that points representing them are capable of symmetrical arrangeme…
FLASK n.
r bottom part. When there are one or more cheeks, the flask is called a three part flask, four part flask, etc. Erlenmeyer flask, a thin glass flask, flat-bottomed and cone-shaped to allow of safely shaking its contents laterally without danger of spilling; -- so called from Erlenmeyer, a German chemist who invented it…
FOLD n.
cation or increase in a geometrical ratio, the doubling, tripling, etc., of anything; as, fourfold, four times, increased in a quadruple ratio, multiplied by four.
FOX n.
, Africa, and the East Indies, esp. P. medius of India. Some of the species are more than four feet across the outspread wings. See Fruit bat. -- Fox bolt, a bolt having a split end to receive a fox wedge. -- Fox brush (Zoöl.), the tail of a fox. -- Fox evil, a disease in which the hair falls off; alopecy. -- Fox g…