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A peculiar organic red coloring matter found in the feathers of various birds.

A group including the greater part of fresh-water fishes, and many marine ones, having the ventral fins under the abdomen behind the pectorals.

eneration; -- called also abiogeny, and opposed to biogenesis. I shall call the . . . doctrine that living matter may be produced by not living matter, the hypothesis of abiogenesis. Huxley, 1870.

The state of being absolute; the system or doctrine of the absolute; the principles or practice of absolute or arbitrary government; despotism. The element of absolutism and prelacy was controlling. Palfrey.

The doctrines of the Academic philosophy. [Obs.] Baxter.

Incomprehensibility of things; the doctrine held by the ancient Skeptic philosophers, that human knowledge never amounts to certainty, but only to probability.

uiescence; esp., favorable reception; approval; as, the acceptance of a gift, office, doctrine, etc. They shall come up with acceptance on mine altar. Isa. lx. 7.

A compound of aniline with acetyl, used to allay fever or pain; -- called also antifebrine.

Excess of acetone in the urine, as in starvation or diabetes.

ple or compound principle, whose presence is necessary to produce acidity, as oxygen, chlorine, bromine, iodine, etc.

Relieving weariness; restorative.

Aristotle, those intended for his genuine disciples, in distinction from his exoteric doctrines, which were adapted to outsiders or the public generally. Hence: Abstruse; profound.

A peculiar larval form of Phoronis, a genus of marine worms, having a circle of ciliated tentacles.

sition not fully proved; the act of acknowledging something The too easy admission of doctrines. Macaulay.

Either of two compounds, a chlorine derivative and bromine derivative, of hydroquinone, used as developers.

To summon; to call. [Obs.] Queen Katharine had privately prevailed with the pope to advoke the cause to Rome. Fuller.

The innermost sanctuary or shrine in ancient temples, whence oracles were given. Hence: A private chamber; a sanctum.

The science of measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation; pneumatics.

The doctrine of æsthetics; æsthetic principles; devotion to the beautiful in nature and art. Lowell.

The science, doctrine, or demonstration of causes; esp., the investigation of the causes of any disease; the science of the origin and development of things.