FATTY a.
See under Clay. -- Fatty degeneration (Med.), a diseased condition, in which the oil globules, naturally present in certain organs, are so multiplied as gradually to destroy and replace the efficient parts of these organs. -- Fatty heart, Fatty liver, etc. (Med.), a heart, liver, etc., which have been the subjects of…
FEED n.
feeding is produced; a feed motion. Feed bag, a nose bag containing feed for a horse or mule. -- Feed cloth, an apron for leading cotton, wool, or other fiber, into a machine, as for carding, etc. -- Feed door, a door to a furnace, by which to supply coal. -- Feed head. (a) A cistern for feeding water by gravity to…
FERMENT n.
o called soluble or chemical ferments, and enzymes. Ferments of the first class are as a rule simple microscopic vegetable organisms, and the fermentations which they engender are due to their growth and development; as, the acetic ferment, the butyric ferment, etc. See Fermentation. Ferments of the second class, on th…
FLEA n.
An insect belonging to the genus Pulex, of the order Aphaniptera. Fleas are destitute of wings, but have the power of leaping energetically. The bite is poisonous to most persons. The human flea (Pulex irritans), abundant in Europe, is rare in America, where the dog flea (P. canis) takes its place. See Aphaniptera, and…