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Protoconch
n.
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The embryonic shell, or first chamber, of ammonites and other cephalopods.
Proto-Doric
a.
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Pertaining to, or designating, architecture, in which the beginnings of the Doric style are supposed to be found.
Protogine
n.
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A kind of granite or gneiss containing a silvery talcose mineral.
Protogynous
a.
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Same as Proterogynous.
Protohippus
n.
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A genus of fossil horses from the Lower Pliocene. They had three toes on each foot, the lateral ones being small.
Protomartyr
n.
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The first martyr; the first who suffers, or is sacrificed, in any cause; -- applied esp. to Stephen, the first Christian martyr.
Protomerite
n.
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The second segment of one of the Gregarinae.
Protomorphic
a.
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Having the most primitive character; in the earliest form; as, a protomorphic layer of tissue.
Protonemata
pl.
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of Protonema
Protonema
n.
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The primary growth from the spore of a moss, usually consisting of branching confervoid filaments, on any part of which stem and leaf buds may be developed.
Protonotary
n.
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Same as Prothonotary.
Protoorganism
n.
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An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.
Protopapas
n.
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A protopope.
Protophyte
n.
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Any unicellular plant, or plant forming only a plasmodium, having reproduction only by fission, gemmation, or cell division.
Protophytology
n.
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Paleobotany.
Protopine
n.
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An alkaloid found in opium in small quantities, and extracted as a white crystalline substance.
Protoplasm
n.
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The viscid and more or less granular material of vegetable and animal cells, possessed of vital properties by which the processes of nutrition, secretion, and growth go forward; the so-called " physical basis of life;" the original cell substance, cytoplasm, cytoblastema, bioplasm sarcode, etc.
Protoplasmatic
a.
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Protoplasmic.
Protoplasmic
a.
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Of or pertaining to the first formation of living bodies.
Protoplasmic
a.
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Of or pertaining to protoplasm; consisting of, or resembling, protoplasm.
Protoplast
n.
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The thing first formed; that of which there are subsequent copies or reproductions; the original.
Protoplast
n.
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A first-formed organized body; the first individual, or pair of individuals, of a species.
Protoplasta
n. pl.
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A division of fresh-water rhizopods including those that have a soft body and delicate branched pseudopodia. The genus Gromia is one of the best-known.
Protoplastic
a.
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First-formed.
Protopodite
n.
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The basal portion, or two proximal and more or less consolidated segments, of an appendage of a crustacean.
Protopope
n.
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One of the clergy of first rank in the lower order of secular clergy; an archpriest; -- called also protopapas.
Protopterus
n.
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See Komtok.
Protosalt
n.
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A salt derived from a protoxide base.
Protosilicate
n.
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A silicate formed with the lowest proportion of silicic acid, or having but one atom of silicon in the molecule.
Protosomite
n.
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One of the primitive segments, or metameres, of an animal.