Loading earlier words…
Ochlocracy

A form of government by the multitude; a mobocracy; mob rule.

Ochotonidae

A natural family of mammals including pikas and extinct forms.

Ochre Ocher

A impure earthy ore of iron or a ferruginous clay, usually red (hematite) or yellow (limonite), -- used as a pigment in making paints, etc. The name is also applied to clays of other colors. A metallic oxide occurring in earthy form; as, tungstic ocher or tungstite.

Ochreous Ocherous

Of or pertaining to ocher; containing or resembling ocher; as, ocherous matter; ocherous soil.

Ochroleucous

Yellowish white; having a faint tint of dingy yellow.

Octachord

An instrument of eight strings; a system of eight tones.

Octad

An atom or radical which has a valence of eight, or is octavalent.

Octaemeron

A fast of eight days before a great festival.

Octagon

A plane figure of eight sides and eight angles.

octagonal

Having eight sides and eight angles.

octagynous

Having eight pistils or styles; octogynous.

octahedral

Having eight faces or sides; of, pertaining to, or formed in, octahedrons; as, octahedral cleavage; an octahedral crystal.

octahedrite

Titanium dioxide occurring in acute octahedral crystals.

octahedron

A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles.

octamer

A molecule composed of eight monomer units bound to each other, usually in a linear array; as, an octamer formed from eight nucleotides is called an octanucleotide.

octamerous

Having the parts in eights; as, an octamerous flower; octamerous mesenteries in polyps.

Octameter

A verse containing eight feet; as, --/ / Deep/ in|to/ the | dark/ness | peer/ing, | long/ I | stood/ there | wond'/ring, | fear/ing.

Octandria

A Linnaean class of plants, in which the flowers have eight stamens not united to one another or to the pistil.

octane

Any one of a group of metametric hydrocarbons (C8H18) of the methane (paraffin) series. The most important is a colorless, volatile, inflammable liquid, found in petroleum, and a constituent of gasoline or ligroin.

Octant

The eighth part of a circle; an arc of 45 degrees.

octanucleotide

A molecule composed of eight nucleotide units bound to each other by phosphodiester bonds in a linear array; as, a partial digest of DNA or RNA may include octanucleotides. See octamer.

octapeptide

A molecule composed of eight amino acid units bound to each other by peptide bonds, usually in a linear array. See octamer.

Octapla

A portion of the Old Testament prepared by Origen in the 3d century, containing the Hebrew text and seven Greek versions of it, arranged in eight parallel columns.

Octateuch

A collection of eight books; especially, the first eight books of the Old Testament.

Octavalent

Having a valence of eight; capable of being combined with, exchanged for, or compared with, eight atoms of hydrogen; -- said of certain atoms or radicals.

Octave

Consisting of eight; eight.

Octavo

Having eight leaves to a sheet; as, an octavo form, book, leaf, size, etc.

Octennial

Happening every eighth year; also, lasting a period of eight years.

octet

A composition for eight parts, usually for eight solo instruments or voices.

Octic

Of the eighth degree or order. A quantic of the eighth degree.

Octillion

According to the French method of numeration (which method is followed also in the United States) the number expressed by a unit with twenty-seven ciphers annexed. According to the English method, the number expressed by a unit with forty-eight ciphers annexed. See Numeration.

Octoate

A salt of an octoic acid; a caprylate.

October

The tenth month of the year, containing thirty-one days.

Octocerata

A suborder of Cephalopoda including Octopus, Argonauta, and allied genera, having eight arms around the head; -- called also Octopoda.

Octodecimo

A book composed of sheets each of which is folded into eighteen leaves; hence; indicating more or less definitely a size of book, whose sheets are so folded; -- usually written 18mo or 18/, and called eighteenmo.

Octodont

Of or pertaining to the Octodontidae, a family of rodents which includes the coypu, and many other South American species.

Octofid

Cleft or separated into eight segments, as a calyx.

Octogild

A pecuniary compensation for an injury, of eight times the value of the thing.

Octogynia

A Linnaean order of plants having eight pistils.

Octoic

Pertaining to, derived from, or resembling, octane; -- used specifically, to designate any one of a group of acids, the most important of which is called caprylic acid.

Octonaphthene

A colorless liquid hydrocarbon of the octylene series, occurring in Caucasian petroleum.

Octonary

Of or pertaining to the number eight.

Octopede

An animal having eight feet, as a spider.

Octopoda

Same as Octocerata. Same as Arachnida.

Octopus

A genus of eight-armed cephalopods, including numerous species, some of them of large size. See Devilfish.

Octoroon

The offspring of a quadroon and a white person; a mestee.

Octostyle

Having eight columns in the front; -- said of a temple or portico. The Parthenon is octostyle, but most large Greek temples are hexastyle. See Hexastyle. An octostyle portico or temple.

octothorpe octothorp

A typographic symbol (#) having two vertical lines intersected by two horizontal lines. It is also called the crosshatch, hash, numeral sign and number sign; in the U. S. it is commonly called the pound sign, especially to designate the symbol as used on digital telephone dials, but this can be confusing to Europeans who think of the pound sign as the symbol for the British pound. It is commonly used as a symbol for the word number; as in #36 (meaning: number thirty-six).

Octoyl

A hypothetical radical (C7H15.CO.), regarded as the essential residue of octoic acid.

Octroi

A privilege granted by the sovereign authority, as the exclusive right of trade granted to a guild or society; a concession.

Octyl

A hypothetical hydrocarbon radical regarded as an essential residue of octane, and as entering into its derivatives; as, octyl alcohol.

Octylene

Any one of a series of metameric hydrocarbons (C8H16) of the ethylene series. In general they are combustible, colorless liquids.

Octylic

Pertaining to, derived from, or containing, octyl; as, octylic ether.

Ocular

The eyepiece of an optical instrument, as of a telescope or microscope.

Oculary

Of or pertaining to the eye; ocular; optic; as, oculary medicines.

Oculiform

In the form of an eye; resembling an eye; as, an oculiform pebble.

Oculina

A genus of tropical corals, usually branched, and having a very volid texture.

Oculinacea

A suborder of corals including many reef-building species, having round, starlike calicles.

Oculist

One skilled in treating diseases of the eye.

Oculomotor

Of or pertaining to the movement of the eye; -- applied especially to the common motor nerves (or third pair of cranial nerves) which supply many of the muscles of the orbit. The oculomotor nerve.

Oculonasal

Of or pertaining to the region of the eye and the nose; as, the oculonasal, or nasal, nerve, one of the branches of the ophthalmic.

Ocypodian

One of a tribe of crabs which live in holes in the sand along the seashore, and run very rapidly, -- whence the name.

Od

An alleged force or natural power, supposed, by Reichenbach and others, to produce the phenomena of mesmerism, and to be developed by various agencies, as by magnets, heat, light, chemical or vital action, etc.; -- called also odyle or the odylic force.

Odal

Noting, or pert. to, odal land or ownership.

Odalisque

A female slave or concubine in the harem of the Turkish sultan.

Odd

Not paired with another, or remaining over after a pairing; without a mate; unmatched; single; as, an odd shoe; an odd glove.

odd-job

varied and irregularly performed; -- of paid labor; as, he found only odd-job employment.

odd-pinnate

Pinnate with a single leaflet at the apex; -- of a leaf shape.

oddball

Eccentric; very unusual; strange; bizarre; as, an oddball request.

oddity

The quality or state of being odd; singularity; queerness; peculiarity; as, oddity of dress, manners, and the like.

Oddly

In an odd manner; unevenly.

Oddment

An odd thing, or one that is left over, disconnected, fragmentary, or the like; something that is separated or disconnected from its fellows; Any separate small part or page in a book, other than the text, such as the title page, contents, etc.

Oddness

The state of being odd, or not even.

Odds

Difference in favor of one and against another; excess of one of two things or numbers over the other; inequality; advantage; superiority; hence, excess of chances; probability. The odds are often expressed by a ratio; as, the odds are three to one that he will win, i. e. he will win three times out of four

Ode

A short poetical composition proper to be set to music or sung; a lyric poem; esp., now, a poem characterized by sustained noble sentiment and appropriate dignity of style.

Loading more words…