9-letter words containing a, d, i, o
- agilawood — agalloch.
- aguinaldo — Emilio [e-mee-lyaw] /ɛˈmi lyɔ/ (Show IPA), 1869–1964, Filipino leader during the Spanish-American war: opposed to U.S. occupation.
- air-bound — stopped up by air.
- airdromes — Plural form of airdrome.
- albondiga — A Spanish or Latin American variety of meatball.
- alcimedon — an Arcadian hero whose daughter, Philao, was seduced by Hercules.
- aldington — Richard. 1892–1962, English poet, novelist, and biographer. His novels include Death of a Hero (1929) and The Colonel's Daughter (1931), which reflect postwar disillusion following World War I
- alepidote — (of a fish) not having scales.
- alimonied — provided or supplied with alimony
- aliquoted — Divided into, or distributed in aliquots.
- alkaloids — Plural form of alkaloid.
- alkoxides — Plural form of alkoxide.
- allantoid — relating to or resembling the allantois
- allodynia — pain caused by a normally painless stimulus
- almoravid — a member of a Muslim dynasty ruling in Spain and northern Africa from 1056 to 1147.
- alongside — If one thing is alongside another thing, the first thing is next to the second.
- alopecoid — resembling a fox
- amidation — to convert into an amide.
- amiloride — a potassium-sparing diuretic, C 6 H 8 ClN 7 O, used in the treatment of hypertension.
- aminoacid — Alternative spelling of amino acid.
- ammonoids — Plural form of ammonoid.
- amortised — Finance. to liquidate or extinguish (a mortgage, debt, or other obligation), especially by periodic payments to the creditor or to a sinking fund. to write off a cost of (an asset) gradually.
- amortized — Finance. to liquidate or extinguish (a mortgage, debt, or other obligation), especially by periodic payments to the creditor or to a sinking fund. to write off a cost of (an asset) gradually.
- amphipods — Plural form of amphipod.
- amyloidal — resembling an amyloid; starch-like
- andantino — (to be performed) slightly faster, or slightly more slowly, than andante
- andorra-i — (language) A parallel logic programming language with the OR-parallelism of Aurora and the AND-parallelism of Parlog.
- andouille — a spicy smoked pork sausage with a blackish skin
- androides — Dated form of android.
- anecdotic — anecdotal
- aneuploid — (of polyploid cells or organisms) having a chromosome number that is not an exact multiple of the haploid number, caused by one chromosome set being incomplete
- anhedonia — the inability to feel or experience pleasure
- anhedonic — unable to feel or experience pleasure
- annointed — Simple past tense and past participle of annoint.
- anodizing — Present participle of anodize.
- anodontia — the congenital absence of teeth
- anthodium — the flower head or bracts of a composite plant, as in daisies or asters
- anticodon — a three-base unit of genetic code contained in transfer RNA that corresponds to a codon region on messenger RNA, involved in genetic translation
- antidoron — consecrated bread
- antidotal — a medicine or other remedy for counteracting the effects of poison, disease, etc.
- antidotes — Plural form of antidote.
- antinodal — the region of maximum amplitude between two adjacent nodes in a standing wave.
- antinodes — Plural form of antinode.
- antipodal — of or relating to diametrically opposite points on the earth's surface
- antipodes — People sometimes refer to Australia and New Zealand as the Antipodes.
- antiworld — a hypothetical or supposed world or universe composed of antimatter
- anybodies — a person of some importance: If you're anybody, you'll receive an invitation.
- aperiodic — not periodic; not occurring at regular intervals
- aphorized — Simple past tense and past participle of aphorize.
- aphrodite — the goddess of love and beauty, daughter of Zeus