12-letter words containing a, i, d, o
- antiperiodic — efficacious against recurring attacks of a disease
- antipredator — discouraging or protecting against predators
- aperiodicity — not periodic; irregular.
- aphrodisiacs — Plural form of aphrodisiac.
- apodeictical — Apodeictic.
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- apotheosized — Simple past tense and past participle of apotheosize.
- appropriated — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- approximated — near or approaching a certain state, condition, goal, or standard.
- archdiocesan — Relating to an archdiocese.
- archdioceses — Plural form of archdiocese.
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- aria da capo — an operatic aria in three sections with the first and third sections alike and the middle section contrasting.
- art director — a person responsible for the sets and costumes in a film
- artiodactyle — (zoology) One of the Artiodactyla, a group of ungulates.
- artiodactyls — Plural form of artiodactyl.
- astoundingly — capable of overwhelming with amazement; stunningly surprising.
- astrodynamic — Pertaining to astrodynamics.
- attitudinous — (informal) Having a bold and possibly unfriendly attitude; sassy.
- auctioneered — Simple past tense and past participle of auctioneer.
- audio system — integrated equipment for producing amplified sound, as in a hi-fi or a mobile disco, or as a public-address system on stage
- audio-visual — Audio-visual equipment and materials involve both recorded sound and pictures.
- audiological — Of, or pertaining to, audiology, or the study of hearing.
- audiologists — Plural form of audiologist.
- audiovisuals — Plural form of audiovisual.
- auditorially — Anatomy, Physiology. pertaining to hearing, to the sense of hearing, or to the organs of hearing.
- autoantibody — an antibody reacting with an antigen that is a part of the organism in which the antibody is formed
- autodiallers — Plural form of autodialler.
- autodidactic — a person who has learned a subject without the benefit of a teacher or formal education; a self-taught person.
- autoxidation — oxidation by exposure to atmospheric oxygen
- avoidability — The possibility of avoiding; the state or condition of being avoidable.
- back molding — a molding, as a backband, applied to interior window and door trim to conceal the edge of the wall surface.
- bacteriocide — Alternative form of bactericide.
- banderillero — a bullfighter's assistant who sticks banderillas into the bull
- bandoneonist — One who plays the bandoneon.
- bank deposit — money placed in a bank account
- bank holiday — A bank holiday is a public holiday.
- barium oxide — a white or yellowish-white poisonous heavy powder used esp as a dehydrating agent. Formula: BaO
- barodynamics — the branch of mechanics concerned with heavy structures
- basidiocarps — Plural form of basidiocarp.
- basidiospore — one of the spores, usually four in number, produced in a basidium
- bastinadoing — Present participle of bastinado.
- beaconsfield — a town in SE England, in Buckinghamshire. Pop: 12 292 (2001)
- bead molding — bead (def 12).
- bearing down — to hold up; support: to bear the weight of the roof.
- bed of nails — a situation or position of extreme difficulty
- benzoic acid — a white crystalline solid occurring in many natural resins, used in the manufacture of benzoates, plasticizers, and dyes and as a food preservative (E210). Formula: C6H5COOH
- bill and coo — the parts of a bird's jaws that are covered with a horny or leathery sheath; beak.
- bioflavonoid — any of a group of biologically active flavone compounds that may help maintain the blood's capillary walls, reducing the likelihood of hemorrhaging: widely found in plants, esp. citrus fruits
- biohazardous — a pathogen, especially one used in or produced by biological research.