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The juice of the grape extracted by the press; also, a fee paid for the use of a wine press.

Tin extracted from the slag.

es, and which can usually be separated by analysis; -- applied especially to drugs, plant extracts, etc. Cathartine is the bitter, purgative principle of senna. Gregory. Bitter principle, Principle of contradiction, etc. See under Bitter, Contradiction, etc.

An alkaloid found in opium in small quantities, and extracted as a white crystalline substance.

An instrument formerly used in extracting foreign or offensive matter from a wound.

A dyestuff resembling alizarin, found in madder root, and extracted as an orange or red crystalline substance.

A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor.

An alkaloid extracted from the root of the pellitory of Spain (Anacyclus pyrethrum).

A yellow crystalline hydrocardon extracted from crude wood spirit; -- called also eblanin.

The bitter principle of quassia, extracted as a white crystalline substance; -- formerly called quassite. [Written also quassiin, and quassine.]

Pertaining to, or designating, a tannic acid found in oak bark and extracted as a yellowish brown amorphous substance.

A glucoside extracted from the bark of the oak (Quercus) as a bitter citron-yellow crystalline substance, used as a pigment and called quercitron.

ric with, and resembling, quinine, found in certain species of cinchona, from which it is extracted as a bitter white crystalline substance; conchinine. It is used somewhat as a febrifuge. [Written also chinidine.]

An alkaloid extracted from the bark of several species of cinchona (esp. Cinchona Calisaya) as a bitter white crystalline substance, C20H24N2O2. Hence, by extension (Med.), any of the salts of this alkaloid, as the acetate, chloride, sulphate, etc., employed as a febrifuge or antiperiodic. Called also quinia, quinina,…

Hence: An extract from anything, containing its rarest virtue, or most subtle and essential constituent in a small quantity; pure or concentrated essence. Let there be light, said God; and forthwith light Ethereal, first of things, quintessence pure, Sprung from the deep. Milton.

Of the nature of a quintessence; purest. "Quintessential extract of mediocrity." G. Eliot.

the initial of radix, root), placed before any quantity, denoting that its root is to be extracted; thus, sq. roota, or sq. root(a + b). To indicate any other than the square root, a corresponding figure is placed over the sign; thus cube roota, indicates the third or cube root of a. -- Radical stress (Elocution), fo…

onal quantity (Alg. ), one that can be expressed without the use of a radical sign, or in extract parts of unity; -- opposed to irrational or radical quantity. -- Rational symptom (Med.), one elicited by the statements of the patient himself and not as the result of a physical examination.

A book containing a selection of extracts for exercises in reading; an elementary book for practice in a language; a reading book.

One who recites; also, a book of extracts for recitation.