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Pentacrinoid

An immature comatula when it is still attached by a stem, and thus resembles a Pentacrinus.

Pentacrinus

A genus of large, stalked crinoids, of which several species occur in deep water among the West Indies and elsewhere.

Pentacron

A solid having five summits or angular points.

Pentacrostic

A set of verses so disposed that the name forming the subject of the acrostic occurs five times -- the whole set of verses being divided into five different parts from top to bottom.

Pentad

Having the valence of a pentad.

Pentadactyloid

Having the form of, or a structure modified from, a pentadactyl limb.

Pentadecane

A hydrocarbon of the paraffin series, (C15H32) found in petroleum, tar oil, etc., and obtained as a colorless liquid; -- so called from the fifteen carbon atoms in the molecule.

Pentadecatoic

Of, pertaining to, or derived from, pentadecane, or designating an acid related to it.

Pentadelphous

Having the stamens arranged in five clusters, those of each cluster having their filaments more or less united, as the flowers of the linden.

Pentafid

Divided or cleft into five parts.

Pentagon

A plane figure having five angles, and, consequently, five sides; any figure having five angles.

Pentagynia

A Linn/an order of plants, having five styles or pistils.

Pentahedral

Having five sides; as, a pentahedral figure.

Pentail

A peculiar insectivore (Ptilocercus Lowii) of Borneo; -- so called from its very long, quill-shaped tail, which is scaly at the base and plumose at the tip.

Pentalpha

A five-pointed star, resembling five alphas joined at their bases; -- used as a symbol.

Pentamera

An extensive division of Coleoptera, including those that normally have five-jointed tarsi. It embraces about half of all the known species of the Coleoptera.

Pentamerous

Divided into, or consisting of, five parts; also, arranged in sets, with five parts in each set, as a flower with five sepals, five petals, five, or twice five, stamens, and five pistils.

Pentamerus

A genus of extinct Paleozoic brachiopods, often very abundant in the Upper Silurian.

Pentamethylene

A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene.

Pentandria

A Linn/an class of plants having five separate stamens.

Pentane

Any one of the three metameric hydrocarbons, C5H12, of the methane or paraffin series. They are colorless, volatile liquids, two of which occur in petroleum. So called because of the five carbon atoms in the molecule.

Pentapody

A measure or series consisting of five feet.

Pentaptych

A picture, or combination of pictures, consisting of a centerpiece and double folding doors or wings, as for an altarpiece.

Pentarchy

A government in the hands of five persons; five joint rulers.

Pentastich

A composition consisting of five verses.

Pentastichous

Having, or arranged in, five vertical ranks, as the leaves of an apple tree or a cherry tree.

Pentastyle

Having five columns in front; -- said of a temple or portico in classical architecture. A portico having five columns.

Pentateuch

The first five books of the Old Testament, collectively; -- called also the Law of Moses, Book of the Law of Moses, etc.

Pentathionic

Pertaining to, or designating, an acid of sulphur obtained by leading hydrogen sulphide into a solution of sulphur dioxide; -- so called because it contains five atoms of sulphur.

Pentathlon

A fivefold athletic performance peculiar to the great national games of the Greeks, including leaping, foot racing, wrestling, throwing the discus, and throwing the spear.

Pentatomic

Having five atoms in the molecule. Having five hydrogen atoms capable of substitution.

Pentavalent

Having a valence of five; -- said of certain atoms and radicals.

Pentecost

A solemn festival of the Jews; -- so called because celebrated on the fiftieth day (seven weeks) after the second day of the Passover (which fell on the sixteenth of the Jewish month Nisan); -- hence called, also, the Feast of Weeks. At this festival an offering of the first fruits of the harvest was made. By the Jews it was generally regarded as commemorative of the gift of the law on the fiftieth day after the departure from Egypt.

Pentecostal

Of or pertaining to Pentecost or to Whitsuntide.

Pentecostals

Offerings formerly made to the parish priest, or to the mother church, at Pentecost.

Pentecoster

An officer in the Spartan army commanding fifty men.

Pentecosty

A troop of fifty soldiers in the Spartan army; -- called also pentecostys.

Pentelican Pentelic

Of or pertaining to Mount Pentelicus, near Athens, famous for its fine white marble quarries; obtained from Mount Pentelicus; as, the Pentelic marble of which the Parthenon is built.

Pentine

An unsaturated hydrocarbon, C5H8, of the acetylene series. Same as Valerylene.

Pentoic

Pertaining to, or desingating, an acid (called also valeric acid) derived from pentane.

Pentose

Any of a group of sugars of the formula C5H10O5, such as as arabinose or ribose; -- so called from the five carbon atoms in the molecule. They are not fermented by yeast.

Pentoxide

An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5.

Pentremites

A genus of crinoids belonging to the Blastoidea. They have five petal-like ambulacra.

Pentyl

The hypothetical radical, C5H11, of pentane and certain of its derivatives. Same as Amyl.

Pentylic

Pertaining to, derived from, or containing, pentyl; as, pentylic alcohol

Penult

The last syllable but one of a word; the syllable preceding the final one.

Penumbra

An incomplete or partial shadow.

Penurious

Excessively sparing in the use of money; sordid; stingy; miserly.

Penury

Absence of resources; want; privation; indigence; extreme poverty; destitution.

Penwiper

A cloth, or other material, for wiping off or cleaning ink from a pen.

Peon

A foot soldier; a policeman; also, an office attendant; a messenger.

Peony

A plant, and its flower, of the ranunculaceous genus P/onia. Of the four or five species, one is a shrub; the rest are perennial herbs with showy flowers, often double in cultivation.

People

To stock with people or inhabitants; to fill as with people; to populate.

Peopled

Stocked with, or as with, people; inhabited.

Peorias

An Algonquin tribe of Indians who formerly inhabited a part of Illinois.

Peperino Peperine

A volcanic rock, formed by the cementing together of sand, scoria, cinders, etc.

Peplis

A genus of plants including water purslane.

Peplum

A peplos. Hence: An overskirt hanging like an ancient peplos; also, a short fitted skirt attached to a waist or coat.

Peplus

An upper garment worn by Grecian and Roman women.

Pepo

Any fleshy fruit with a firm rind, as a pumpkin, melon, or gourd. See Gourd.

Pepper

To fire numerous shots (at).

Pepper box

A buttress on the left-hand wall of a fives court as the game is played at Eton College, England.

Peppercorn

A dried berry of the black pepper (Piper nigrum).

Pepperer

A grocer; -- formerly so called because he sold pepper.

Peppergrass

Any herb of the cruciferous genus Lepidium, especially the garden peppergrass, or garden cress, Lepidium sativum; -- called also pepperwort. All the species have a pungent flavor. The common pillwort of Europe (Pilularia globulifera). See Pillwort.

Pepperidge

A North American tree (Nyssa multiflora) with very tough wood, handsome oval polished leaves, and very acid berries, -- the sour gum, or common tupelo. See Tupelo.

Peppermint

An aromatic and pungent plant of the genus Mentha (Mentha piperita), much used in medicine and confectionery.

Pepperoni

a hard sausage of beef and pork, highly seasoned.

peppershaker

A shaker with a perforated top for sprinkling ground pepper.

pepperwood

A Pacific coast tree (Umbellularia californica) having aromatic foliage and small umbellate flowers followed by olivelike fruit; yields a hard tough wood.

Peppery

Of or pertaining to pepper; having the qualities of pepper; hot; pungent.

peppy

Full of pep; spirited; bouncy{2}; as, the peppy and interesting talk.

Pepsi

Pepsi Cola; -- a familiar contraction; as, I prefer Pepsi to Coke.

Pepsi-Cola Pepsi Cola

A carbonated soft drink flavored by extract from the cola nut (kola nut). The nut is found on trees of the species Cola acuminata and Cola nitida.

Pepsin

A proteolytic enzyme (MW 34,500) contained in the secretory glands of the stomach. In the gastric juice it is united with dilute hydrochloric acid (0.2 per cent, approximately) and the two together constitute the active portion of the digestive fluid. It degrades proteins to proteoses and peptides, and is notable for having a very low pH optimum for its activity. It is the active agent in the gastric juice of all animals.

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