12-letter words containing h, o, t, a
- autapomorphy — (cladistics) A derived trait that is unique to a particular taxon.
- authorizable — able to be authorized
- autochangers — Plural form of autochanger.
- autochthonal — Existing where it was formed or born; native, aboriginal, indigenous.
- autochthones — Alternative spelling of autochthons.
- autochthonic — pertaining to autochthons; aboriginal; indigenous (opposed to heterochthonous).
- autographing — Present participle of autograph.
- autohypnosis — the process or result of self-induced hypnosis
- autohypnotic — Of or pertaining to autohypnosis; self-hypnotizing.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autorhythmic — That generates its own rhythm.
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- autotheistic — Self-worshiping; prideful in the extreme.
- azathioprine — a synthetic drug that suppresses the normal immune responses of the body and is administered orally during and after organ transplantation and also in certain types of autoimmune disease. Formula: C9H7N7O2S
- azithromycin — A macrolide antibiotic derived from erythromycin.
- baby brother — a younger brother
- bachelorette — A bachelorette is a woman who has never married.
- bagworm moth — any moth of the family Psychidae
- basset hound — A basset hound is a dog with short strong legs, a long body, and long ears. It is kept as a pet or used for hunting.
- bastel house — (on the Anglo-Scottish border) a partly fortified house, usually with a vaulted ground floor.
- bathmophobia — The fear of stairs and slopes.
- bathochromic — denoting or relating to a shift to a longer wavelength in the absorption spectrum of a compound
- bathophilous — (of an organism) living in very deep water
- baton charge — A baton charge is an attacking forward movement made by a large group of policemen carrying batons.
- battleworthy — capable of engaging in combat; ready for battle: a decline in the nation's battleworthy forces.
- beacon light — a light signal for shipping
- bean-shooter — peashooter.
- beaver cloth — beaver1 (def 8).
- betanaphthol — a colorless, crystalline isomer of naphthol, C10H8O, used as an antiseptic and parasiticide
- bibliothecal — relating to a bibliotheca
- biotechnical — relating to biotechnology
- birthday boy — the boy or man whose birthday is being celebrated
- blabbermouth — a person who talks too much or indiscreetly
- blastosphere — blastula
- bletheration — nonsense!
- block heater — an electrically operated immersion heater fitted either to enter the water hose or the water jacket surrounding the cylinder block of a motor to warm the coolant in cold weather.
- boar-hunting — the practice of hunting wild boars
- board shorts — shorts with longer legs, originally meant to protect a surfer's legs against the surfboard
- boatsmanship — seamanship as applied to boats, especially rowboats and motorboats.
- book matches — safety matches made of paper and fastened into a small cardboard folder
- bothy ballad — a folk song, esp one from the farming community of NE Scotland
- bottlewasher — a person or machine that washes bottles.
- boxing match — a competition between two boxers
- branch depot — one of a several depots receiving stock from the same central supplier
- branch point — Electricity. a point in an electric network at which three or more conductors meet.
- breakthrough — A breakthrough is an important development or achievement.
- breastplough — a plough driven by the worker's breast, often used to pare turf
- breath group — a sequence of sounds articulated in the course of a single exhalation; an utterance or part of an utterance produced between pauses for breath.
- broken heart — If you say that someone has a broken heart, you mean that they are very sad, for example because a love affair has ended unhappily.
- bromomethane — methyl bromide.