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Of, pertaining to, or designating, a complex ketonic acid, C5H6O3, obtained as a white crystalline substance; -- so called because once supposed to contain a peculiar radical of four carbon atoms. Called also acetyl-acrylic acid.

the functions of the above-named organs. Both asexual and sexual reproduction, often of a complex type, occur in these forms. The Thallophyta exist almost exclusively as gametophytes, the sporophyte being absent or rudimentary. By those who do not separate the Myxophyta from the Tallophyta as a distinct phylum the latt…

An artificial alkaloid of complex composition, resembling thalline and used as an antipyretic, -- whence its name.

Any one of a series of complex basic sulphur compounds analogous to the sulphines.

An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.

bius anumbii) allied to the ovenbirds of the genus Furnarius). It builds a very large and complex nest of twigs and thorns in a bush or tree.

A complex double tolyl and toluidine derivative of glycocoll, obtained as a white crystalline substance.

Of, pertaining to, or designating, a complex tribasic organic acid, C3H5.(CO2H)3 occurring naturally in unripe beet roots, and produced artificially from glycerin as a white crystalline substance.

A complex sugar, as raffinose, yielding by hydrolysis three simple sugar molecules.

peared in upper molars. Another large cone then arose, usually from the cingulum. In more complex forms, smaller intermediate cusps appeared.

e given to any one of a series of orange-red dyestuffs produced artificially from certain complex sulphonic acid derivatives of azo and diazo hydrocarbons of the aromatic series; -- so called because of the general resemblance to the shades of nasturtium (Tropæolum).

racial type including the Afghans, and characterized chiefly by stature above mean, fair complexion, dark, or sometimes gray, eyes, brachycephaly, and very long, prominent, and moderately narrow nose.

is expressed; a unit of measure or value; as 1 foot, 1 dollar, 1 pound, and the like. -- Complex unit (Theory of Numbers), an imaginary number of the form a + b-1, when a2 + b2 = 1. -- Duodecimal unit, a unit in the scale of numbers increasing or decreasing by twelves. -- Fractional unit, the unit of a fraction; the…

ual and reciprocal influence on each other, and are not mere aggregations of more or less complex groups; -- distinguished from the dualistic theory.

A combining form (also used adjectively) from uranium; -- used in naming certain complex compounds; as in uranoso-uranic oxide, uranoso-uranic sulphate.

Any one of the many complex derivatives of urea; thus, hydantoin, and, in an extended dense, guanidine, caffeine, et., are ureides. [Written also ureid.]

Pertaining to, or designating, a complex acid obtained, as a yellow crystalline substance, from certain genera of lichens (Usnea, Parmelia, etc.).

nd drug, obtained by the action of acetic acid on copper, and consisting essentially of a complex mixture of several basic copper acetates.

e fundamental planes in angles, and sometimes take their place. They have in general very complex symbols.

A complex nitrogenous substance, produced as a yellow crystalline substance, and regarded as a complex derivative of barbituric acid.