9-letter words containing o, t, s
- ironsmith — a worker in iron; blacksmith.
- ironstone — any iron-bearing mineral or rock with siliceous impurities.
- isanthous — having regular flowers.
- isentrope — a line on a map or chart joining points having equal entropy.
- islington — a borough of N London, England.
- isobathic — having the same depth.
- isobutane — a colorless, flammable gas, C 4 H 10 , used as a fuel, as a refrigerant, and in the manufacture of gasoline by alkylation.
- isobutene — (organic compound) The unsaturated hydrocarbon methylpropene, (CH3)2C=CH2; used in the manufacture of polybutene and butyl rubber.
- isocrates — 436–338 b.c, Athenian orator.
- isocratic — a government in which all individuals have equal political power.
- isogamete — one of a pair of conjugating gametes, exhibiting no differences in form, size, structure, or sex.
- isografts — Plural form of isograft.
- isohyetal — a line drawn on a map connecting points having equal rainfall at a certain time or for a stated period.
- isokontan — an alga whose zoospores have equal cilia
- isolating — isolated; alone.
- isolation — an act or instance of isolating.
- isolative — noting a change in part of the sound of a word made independently of the phonetic environment of that part.
- isolators — Plural form of isolator.
- isolectin — Any of a number of closely related lectins that are difficult to separate, and act together.
- isometric — of, relating to, or having equality of measure.
- isooctane — the octane C 8 H 18 , used as one of the standards in establishing the octane number of a fuel.
- isopectic — a line drawn on a map connecting all points where ice starts to form at approximately the same period at the onset of winter.
- isopentyl — isoamyl.
- isophotal — relating to an isophote or isophotes, or to a diagram on which isophotes are represented
- isopleths — Plural form of isopleth.
- isopolity — equal rights of citizenship, as in different communities; mutual political rights.
- isopteran — a member of the order Isoptera which includes social, colonizing insects such as termites
- isoquants — Plural form of isoquant.
- isorhythm — a structural feature characteristic of the Ars Nova motet, consisting of a single rhythmic phrase pattern repeated, usually in the tenor, throughout the composition.
- isosmotic — isotonic (def 1).
- isostatic — of, relating to, or characterized by isostasy.
- isosteric — Chemistry. having the same number of valence electrons in the same configuration but differing in the kinds and numbers of atoms.
- isotactic — (of a polymer) having the same configuration at successive, regularly spaced positions along the chain. See also configuration (def 4).
- isotheres — Plural form of isothere.
- isotherms — Plural form of isotherm.
- isotropic — Physics. of equal physical properties along all axes. Compare anisotropic (def 1).
- jack post — a post for supporting a floor beam, having two telescoping sections, adjustable to any height.
- jackboots — Plural form of jackboot.
- jackstone — jack1 (def 5a, b).
- jacobsite — a rare magnetic mineral, manganese iron oxide, MnFe 2 O 4 , similar to magnetite.
- jambstone — a stone, or one of the stones, forming one jamb of an opening.
- jamestown — a British island in the S Atlantic: Napoleon's place of exile 1815–21. 47 sq. mi. (122 sq. km).
- jargonist — a user of jargon
- jasmonate — a hormone that regulates plant growth
- jelutongs — Plural form of jelutong.
- jesselton — former name of Kota Kinabalu.
- jettisons — Plural form of jettison.
- jobstears — (used with a plural verb) the hard, nearly spherical bracts that surround the female flowers of an Asian grass, Coix lacryma-jobi, and which when ripe are used as beads.
- jobsworth — (chiefly, British) A minor worker who refuses to be flexible in the application of rules to help a client or customer.
- jock scot — an artificial fly having a yellow floss body, black silk tag, scarlet and yellow tail, wings of scarlet and of jungle cock feathers spotted with yellow and gray, and hackle of guinea fowl and grouse feathers.