9-letter words containing r, i, d
- air drill — a drill powered by compressed air.
- air medal — a U.S. military decoration awarded for meritorious achievement during participation in aerial operations
- air-bound — stopped up by air.
- air-dried — preserved by exposing to the air and allowing to dry
- airdromes — Plural form of airdrome.
- airfields — Plural form of airfield.
- airheaded — Slang. a scatterbrained, stupid, or simple-minded person; dolt.
- airlifted — Simple past tense and past participle of airlift.
- airmailed — Simple past tense and past participle of airmail.
- airy disc — the bright central part of the diffraction pattern of light from a point source that is diffracted by a circular aperture.
- all-fired — excessive; extreme
- almoravid — a member of a Muslim dynasty ruling in Spain and northern Africa from 1056 to 1147.
- amaritude — Bitterness.
- amaryllid — a plant of the amaryllis family
- amiloride — a potassium-sparing diuretic, C 6 H 8 ClN 7 O, used in the treatment of hypertension.
- 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.
- andorra-i — (language) A parallel logic programming language with the OR-parallelism of Aurora and the AND-parallelism of Parlog.
- andradite — a yellow, green, or brownish-black garnet that consists of calcium iron silicate and is used as a gemstone. Formula: Ca3Fe2(SiO4)3
- androides — Dated form of android.
- anhydride — a compound that has been formed from another compound by dehydration
- anhydrite — a colourless or greyish-white mineral, found in sedimentary rocks. It is used in the manufacture of cement, fertilizers, and chemicals. Composition: anhydrous calcium sulphate. Formula: CaSO4. Crystal structure: orthorhombic
- anti-drug — opposing or restricting the use of narcotics or other drugs of abuse: to enact stricter antidrug laws.
- antidoron — consecrated bread
- antidraft — opposed to compulsory military service or conscription
- antifraud — acting against fraud
- antiradar — (of a missile or other weapon) designed to destroy radar detection equipment
- antitrade — a wind in the upper atmosphere blowing in the opposite direction from and above the trade winds
- antiworld — a hypothetical or supposed world or universe composed of antimatter
- apartheid — Apartheid was a political system in South Africa in which people were divided into racial groups and kept apart by law.
- 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
- apodiform — (zoology) Belonging to the order Apodiformes, including swifts and hummingbirds.
- appraised — Simple past tense and past participle of appraise.
- aquitards — Plural form of aquitard.
- arachidic — of or derived from arachidic acid.
- arachnids — Plural form of arachnid.
- arachnoid — the middle of the three membranes that cover the brain and spinal cord
- araneidan — related to or belonging to the araneid
- arborized — Simple past tense and past participle of arborize.
- archaized — Simple past tense and past participle of archaize.
- archdruid — a chief or principal druid
- archfiend — a chief fiend
- archibald — a masculine name: dim. Archie, Archy
- arid zone — either of the zones of latitude 15–30° N and S characterized by very low rainfall and desert or semidesert terrain
- aridities — being without moisture; extremely dry; parched: arid land; an arid climate.
- arillated — (of seeds) having an aril
- aristides — known as Aristides the Just. ?530–?468 bc, Athenian general and statesman, who played a prominent part in the Greek victories over the Persians at Marathon (490), Salamis (480), and Plataea (479)
- armadillo — An armadillo is a small animal whose body is covered with large bony scales and which rolls itself into a ball when it is attacked. Armadillos are mainly found in South and Central America.