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Protatic

Of or pertaining to the protasis of an ancient play; introductory.

Proteaceous

Of or pertaining to the Proteace/, an order of apetalous evergreen shrubs, mostly natives of the Cape of Good Hope or of Australia.

Protean

Of or pertaining to Proteus; characteristic of Proteus.

Protect

To cover or shield from danger or injury; to defend; to guard; to preserve in safety; as, a father protects his children.

Protection

The act of protecting, or the state of being protected; preservation from loss, injury, or annoyance; defense; shelter; as, the weak need protection.

Protectionism

The doctrine or policy of protectionists. See Protection, 4.

Protective

Affording protection; sheltering; defensive.

Protector

One who, or that which, defends or shields from injury, evil, oppression, etc.; a defender; a guardian; a patron.

Protectoral

Of or pertaining to a protector; protectorial; as, protectoral power.

Protectorate

Government by a protector; -- applied especially to the government of England by Oliver Cromwell.

Proteg/e Protege

One under the care and protection of another, especially one receiving counseling and assistance in career development.

Proteid

An older, imprecise term replaced by protein.

Proteidea

An order of aquatic amphibians having prominent external gills and four legs. It includes Proteus and Menobranchus (Necturus). Called also Proteoidea, and Proteida.

Proteiform

Changeable in form; resembling a Proteus, or an am/ba.

Protein

any polymer of an amino acid joined by peptide (amide) bonds. Most natural proteins have alpha-amino acids as the monomeric constituents. All classical enzymes are composed of protein, and control most of the biochemical transformations carrie dout in living cells. They may be soluble, as casein, albumins, and other globular proteins, or insoluble (e. g. "structural proteins"), as collagen or keratin. "albumin", an older term for protein, is now used primarily to refer to certain specific soluble globular proteins found in eggs or blood serum, e.g. bovine serum albumin, the main soluble protein in teh serum of cattle, used as an enzymatically inert protein in biochemical research.

Proteles

A South Africa genus of Carnivora, allied to the hyenas, but smaller and having weaker jaws and teeth. It includes the aard-wolf.

Protend

To hold out; to stretch forth.

Proteolysis

The digestion or dissolving of proteid matter by proteolytic ferments.

Proteolytic

Converting proteid or albuminous matter into soluble and diffusible products, as peptones.

Proteose

One of a class of soluble products formed in the digestion of proteids with gastric and pancreatic juice, and also by the hydrolytic action of boiling dilute acids on proteids. Proteoses are divided into the two groups, the primary and secondary proteoses.

Proterandrous

Having the stamens come to maturity before the pistil; -- opposed to proterogynous.

Proteranthous

Having flowers appearing before the leaves; -- said of certain plants.

Proteroglypha

A suborder of serpents including those that have permanently erect grooved poison fangs, with ordinary teeth behind them in the jaws. It includes the cobras, the asps, and the sea snakes. Called also Proteroglyphia.

Proterogynous

Having the pistil come to maturity before the stamens; protogynous; -- opposed to proterandrous.

Proterosaurus

An extinct genus of reptiles of the Permian period. Called also Protosaurus.

Protest

A solemn declaration of opinion, commonly a formal objection against some act; especially, a formal and solemn declaration, in writing, of dissent from the proceedings of a legislative body; as, the protest of lords in Parliament.

Protestantism

The quality or state of being protestant, especially against the Roman Catholic Church; the principles or religion of the Protestants.

Protestantly

Like a Protestant; in conformity with Protestantism.

Protestation

The act of making a protest; a public avowal; a solemn declaration, especially of dissent.

Protester

One who protests; one who utters a solemn declaration.

Proteus

A sea god in the service of Neptune who assumed different shapes at will. Hence, one who easily changes his appearance or principles.

Prothallus

The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the oophoric generation of ferns, etc.

Prothesis

A credence table; -- so called by the Eastern or Greek Church.

Prothetic

Of or pertaining to prothesis; as, a prothetic apparatus.

Prothorax

The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.

Protista

A provisional group in which are placed a number of low microscopic organisms of doubtful nature. Some are probably plants, others animals.

Proto-Doric

Pertaining to, or designating, architecture, in which the beginnings of the Doric style are supposed to be found.

Protocanonical

Of or pertaining to the first canon, or that which contains the authorized collection of the books of Scripture; -- opposed to deutero-canonical.

Protocatechuic

Pertaining to, derived from, or designating, an organic acid which is obtained as a white crystalline substance from catechin, asafetida, oil of cloves, etc., and by distillation itself yields pyrocatechin.

Protocercal

Having a caudal fin extending around the end of the vertebral column, like that which is first formed in the embryo of fishes; diphycercal.

Protococcus

A genus of minute unicellular alg/ including the red snow plant (Protococcus nivalis).

Protocol

To make or write protocols, or first draughts; to issue protocols.

Protoconch

The embryonic shell, or first chamber, of ammonites and other cephalopods.

Protogine

A kind of granite or gneiss containing a silvery talcose mineral.

Protohippus

A genus of fossil horses from the Lower Pliocene. They had three toes on each foot, the lateral ones being small.

Protomartyr

The first martyr; the first who suffers, or is sacrificed, in any cause; -- applied esp. to Stephen, the first Christian martyr.

Protometals

A finer form of metals, indicated by enhanced lines in their spark spectra (which are also observed in the spectra of some stars), obtained at the highest available laboratory temperatures (Lockyer); as protocalcium, protochromium, protocopper, protonickel, protosilicon, protostrontium, prototitanium, protovanadium.

Protomorphic

Having the most primitive character; in the earliest form; as, a protomorphic layer of tissue.

Protonema

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.

Protoorganism

An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.

Protophyte

Any unicellular plant, or plant forming only a plasmodium, having reproduction only by fission, gemmation, or cell division.

Protopine

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

Protoplasm

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.

Protoplasmic

Of or pertaining to the first formation of living bodies.

Protoplasta

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.

Protopodite

The basal portion, or two proximal and more or less consolidated segments, of an appendage of a crustacean.

Protopope

One of the clergy of first rank in the lower order of secular clergy; an archpriest; -- called also protopapas.

Protosalt

A salt derived from a protoxide base.

Protosilicate

A silicate formed with the lowest proportion of silicic acid, or having but one atom of silicon in the molecule.

Protosomite

One of the primitive segments, or metameres, of an animal.

Protosulphide

That one of a series of sulphides of any element which has the lowest proportion of sulphur; a sulphide with but one atom of sulphur in the molecule.

Prototype

An original or model after which anything is copied; the pattern of anything to be engraved, or otherwise copied, cast, or the like; a primary form; exemplar; archetype.

Protovertebra

One of the primitive masses, or segments, into which the mesoblast of the vertebrate embryo breaks up on either side of the anterior part of the notochord; a mesoblastic, or protovertebral, somite. See Illust. of Ectoderm.

Protoxide

That one of a series of oxides having the lowest proportion of oxygen. See Proto-, 2 (b).

Protoxidize

To combine with oxygen, as any elementary substance, in such proportion as to form a protoxide.

Protozoa

The lowest of the grand divisions of the animal kingdom.

Protozoan

Of or pertaining to the Protozoa. One of the Protozoa.

Protozoon

One of the Protozoa. A single zooid of a compound protozoan.

Protozoonite

One of the primary, or first-formed, segments of an embryonic arthropod.

Protractile

Capable of being protracted, or protruded; protrusile.

Protraction

A drawing out, or continuing; the act of delaying the termination of a thing; prolongation; continuance; delay; as, the protraction of a debate.

Protractive

Drawing out or lengthening in time; prolonging; continuing; delaying.

Protractor

One who, or that which, protracts, or causes protraction.

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