10-letter words containing o, s, i, r
- iron cross — a German medal awarded for outstanding bravery or service during wartime.
- iron horse — a locomotive.
- ironfisted — ruthless, harsh, and tyrannical: an ironfisted dictator.
- ironmaster — the master of a foundry or ironworks; a manufacturer of iron.
- irresolute — not resolute; doubtful; infirm of purpose; vacillating.
- irrigators — Plural form of irrigator.
- irruptions — Plural form of irruption.
- isabnormal — a line on a map or chart connecting points having an equal deviation from the normal value of some meteorological quantity, as temperature.
- isentropes — a line on a map or chart joining points having equal entropy.
- isentropic — having a constant entropy.
- iso rating — a classification of film speed in which a doubling of the ISO number represents a doubling in sensitivity; for example, ISO 400 film requires half the exposure of ISO 200 under the same conditions. The system uses identical numbers to the obsolete ASA rating
- isoborneol — (organic compound) The exo-isomer of borneol.
- isobutyric — Of or pertaining to isobutyric acid or its derivatives.
- isocaloric — Having the same calorific value.
- isochronal — equal or uniform in time.
- isochronon — A clock designed to keep very accurate time.
- isochroous — having the same color throughout.
- isoflurane — a volatile, halogenated ether, C 3 H 2 ClF 5 O, used as a general anesthetic in surgery.
- isographic — (in the study of the geographical distribution of a dialect) a line drawn on a map to indicate areas having common linguistic characteristics.
- isolateral — Having similar upper and lower (or front and back) surfaces.
- isomerases — Plural form of isomerase.
- isomerized — (chemistry) converted from one isomer to another.
- isometrics — of, relating to, or having equality of measure.
- isomorphic — Biology. different in ancestry, but having the same form or appearance.
- isoprenoid — pertaining to, derived from, or similar to isoprene.
- isopterous — belonging or pertaining to social insects of the order Isoptera, comprising the termites.
- isosporous — having spores of only one kind
- isosterism — Chemistry. the quality or state of being isosteric.
- isothermal — occurring at constant temperature.
- isothermic — occurring at constant temperature.
- isotopomer — (chemistry) any isomer of an organic compound differing only in the position of an isotope.
- isotropism — isotropy
- isotropous — (archaic) isotropic.
- iterations — the act of repeating; a repetition.
- jaborandis — Plural form of jaborandi.
- jacob riis — Jacob August, 1849–1914, U.S. journalist and social reformer, born in Denmark.
- jeistiecor — a tight-fitting garment
- jeopardies — Plural form of jeopardy.
- jeopardise — to put in jeopardy; hazard; risk; imperil: He jeopardized his life every time he dived from the tower.
- jointuress — A woman to whom an estate is bequeathed via jointure.
- jointworms — Plural form of jointworm.
- journalise — Alternative spelling of journalize.
- journalism — the occupation of reporting, writing, editing, photographing, or broadcasting news or of conducting any news organization as a business.
- journalist — a person who practices the occupation or profession of journalism.
- kairomones — Plural form of kairomone.
- karyolysis — the dissolution of a cell nucleus.
- keratinous — composed of or resembling keratin; horny.
- ketotriose — (carbohydrate) Any ketose having three carbon atoms; in reality, only dihydroxyacetone.
- kickboards — Plural form of kickboard.
- kicksorter — a multichannel pulse-height analyser used esp to distinguish between isotopes by sorting their characteristic pulses (kicks)