8-letter words containing o, i
- ammonium — of, consisting of, or containing the monovalent group NH4– or the ion NH4+
- ammonoid — any of the extinct group of sea-dwelling cephalopod molluscs with coiled and chambered shells
- amnionic — Amniotic.
- amniotes — Plural form of amniote.
- amniotic — of or relating to the amnion
- amoeboid — of, related to, or resembling amoebae
- amoretti — a little cupid.
- amorists — Plural form of amorist.
- amorphic — Having no defined shape, lacking form; amorphous.
- amortise — amortize
- amortize — In finance, if you amortize a debt, you pay it back in regular payments.
- amourist — Alternative form of amorist.
- amphipod — any marine or freshwater crustacean of the order Amphipoda, such as the sand hoppers, in which the body is laterally compressed: subclass Malacostraca
- amphoric — resembling the sound produced by blowing into a bottle. Amphoric breath sounds are heard through a stethoscope placed over a cavity in the lung
- amplicon — A piece of DNA or RNA formed as the products of natural or artificial amplification events, as in a polymerase chain reaction.
- amrinone — a potent substance, C 10 H 9 N 3 O, used in the treatment of congestive heart failure.
- anabolic — of or relating to anabolism
- anagogic — of or relating to an anagoge.
- analogia — a lectern.
- analogic — based on, involving, or expressing an analogy.
- anamonic — A mnemonic used for recalling lists of words, particularly in Scrabble, consisting of a \"stem\" of base letters and an accompanying phrase, each of whose letters can combine with the stem to form an anagram of a word.
- anapolis — a city in central Brazil.
- anatolia — the Asian part of Turkey, occupying the peninsula between the Black Sea, the Mediterranean, and the Aegean: consists of a plateau, largely mountainous, with salt lakes in the interior
- anatomic — of or relating to anatomy
- anatoxin — a bacterial toxin that has been weakened for use in inoculations
- anconoid — resembling the ancon or elbow
- anctious — Obsolete form of anxious.
- andirons — Plural form of andiron.
- androids — Plural form of android.
- anechoic — having a low degree of reverberation of sound
- anemious — (of a plant) Growing in exposed windy places.
- anemosis — spacing between the annual rings in wood that is caused by strong winds bending the tree trunk
- angelico — Fra (fra), original name Guido di Pietro; monastic name Fra Giovanni da Fiesole. ?1400–55, Italian fresco painter and Dominican friar
- anginose — (dated) Relating to angina; anginous.
- anginous — of, noting, or pertaining to angina, especially angina pectoris.
- angiomas — Plural form of angioma.
- aniconic — (of images of deities, symbols, etc) not portrayed in a human or animal form
- animator — An animator is a person who makes films by means of animation.
- annigoni — Pietro (ˈpjɛːtro). 1910–88, Italian painter; noted esp for his portraits of President Kennedy (1961) and Queen Elizabeth II (1955 and 1970)
- anniston — a city in E Alabama.
- annoying — Someone or something that is annoying makes you feel fairly angry and impatient.
- annunzio — Gabriele [gah-bree-e-le] /ˌgɑ briˈɛ lɛ/ (Show IPA), D'Annunzio, Gabriele.
- anodized — coated with a protective oxide film by electrolysis
- anodynic — relating to the soothing or alleviating of pain
- anointed — chosen officially to do an important job
- anointer — One who anoints.
- anomeric — (organic chemistry) Of, or pertaining to anomers.
- anoopsia — a form of squint in which the eye turns upwards
- anorchia — An intersex condition of XY individuals where both testes are absent at birth.
- anorexia — Anorexia or anorexia nervosa is an illness in which a person has an overwhelming fear of becoming fat, and so refuses to eat enough and becomes thinner and thinner.