FLUORINE n.
ine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. If set free it immediately attacks the containing mate…
FOR prep.
else controls in the performing of an action, or that in spite of which anything is done, occurs, or is; hence, equivalent to notwithstanding, in spite of; -- generally followed by all, aught, anything, etc. The writer will do what she please for all me. Spectator. God's desertion shall, for aught he knows, the next mi…
FOREIGN a.
ign to each other. See Exchange, n., 4. Kent. Story. -- Foreign body (Med.), a substance occurring in any part of the body where it does not belong, and usually introduced from without. -- Foreign office, that department of the government of Great Britain which has charge British interests in foreign countries.…
FORMIC a.
rbamic acid. -- Formic acid, a colorless, mobile liquid, HCO.OH, of a sharp, acid taste, occurring naturally in ants, nettles, pine needles, etc., and produced artifically in many ways, as by the oxidation of methyl alcohol, by the reduction of carbonic acid or the destructive distillation of oxalic acid. It is the fi…
FRESH a.
ition; as, fresh vegetables, flowers, eggs, meat, fruit, etc.; recently made or obtained; occurring again; repeated; as, a fresh supply of goods; fresh tea, raisins, etc.; lately come or made public; as, fresh news; recently taken from a well or spring; as, fresh water.
FROM prep.
by aid of; -- used whenever departure, setting out, commencement of action, being, state, occurrence, etc., or procedure, emanation, absence, separation, etc., are to be expressed. It is construed with, and indicates, the point of space or time at which the action, state, etc., are regarded as setting out or beginning;…