8-letter words containing r, a, i, n, o
- graviton — the theoretical quantum of gravitation, usually assumed to be an elementary particle that is its own antiparticle and that has zero rest mass and charge and a spin of two.
- groaning — a low, mournful sound uttered in pain or grief: the groans of dying soldiers.
- gyration — the act of gyrating; circular or spiral motion; revolution; rotation; whirling.
- hadronic — (physics) of, related to, or composed of hadrons.
- handiron — andiron.
- harmonia — the daughter of Ares and Aphrodite and wife of Cadmus.
- harmonic — pertaining to harmony, as distinguished from melody and rhythm.
- harrison — Benjamin, 1726?–91, American political leader (father of William Henry Harrison).
- herodian — of or relating to Herod the Great, his family, or its partisans.
- hoarding — a supply or accumulation that is hidden or carefully guarded for preservation, future use, etc.: a vast hoard of silver.
- horatian — of or relating to Horace.
- horntail — any of various wasplike insects of the family Siricidae, the females of which have a hornlike ovipositor.
- ignorant — lacking in knowledge or training; unlearned: an ignorant man.
- in a row — lined up
- in favor — in agreement
- inboards — Plural form of inboard.
- incroach — Archaic form of encroach.
- indeavor — Obsolete form of endeavor.
- inflator — to distend; swell or puff out; dilate: The king cobra inflates its hood.
- informal — without formality or ceremony; casual: an informal visit.
- inornate — Not ornate.
- inroaded — Simple past tense and past participle of inroad.
- intrados — the interior curve or surface of an arch or vault.
- ion trap — any device used to prevent ions in an electron beam from striking other apparatus, especially in mass spectrometry.
- iraklion — a seaport in N Crete.
- iron age — the period in the history of humankind, following the Stone Age and the Bronze Age, marked by the use of implements and weapons made of iron.
- iron man — Calvin Edward, Jr ("Cal"; "Iron Man") born 1960, U.S. baseball player.
- iron pan — a hard layer of precipitated iron salts often found below the surface of sands and gravels
- ironbark — any of the various Australian eucalyptuses having a hard, solid bark.
- ironclad — covered or cased with iron plates, as a ship for naval warfare; armor-plated.
- ironical — pertaining to, of the nature of, exhibiting, or characterized by irony or mockery: an ironical compliment; an ironical smile.
- ironware — articles of iron, as pots, kettles, or tools; hardware.
- janiform — Janus-faced.
- janitors — Plural form of janitor.
- juration — an act of taking or administering an oath.
- k ration — an emergency field ration for U.S. armed forces when other food or rations are not available, consisting of three separate packaged meals of concentrated or dehydrated food.
- kairouan — a city in NE Tunisia: a holy city of Islam.
- karoline — a female given name.
- karyotin — chromatin
- laboring — productive activity, especially for the sake of economic gain.
- londrina — a city in E Brazil.
- longhair — Sometimes Disparaging. an intellectual.
- lonicera — Any plant of the genus Lonicera, the honeysuckles.
- lorraine — Also, Lorrain. Claude (Claude Gelée) 1600–82, French painter.
- macaroni — small, tubular pasta prepared from wheat flour.
- maindoor — a door giving access to a house from the street
- majoring — a commissioned military officer ranking next below a lieutenant colonel and next above a captain.
- maniform — shaped like a hand.
- manorial — (in England) a landed estate or territorial unit, originally of the nature of a feudal lordship, consisting of a lord's demesne and of lands within which he has the right to exercise certain privileges, exact certain fees, etc.
- marciano — Rocky (Rocco Francis Marchegiano) 1924–69, U.S. boxer: world heavyweight champion 1952–56.