| ACADEMICAL | • academical adj. (Rare) Belonging to the school of Plato; believing in Plato’s philosophy; sceptical . • academical adj. Pertaining to a university or other form of higher education. • academical n. (Plural only) Academic dress, consisting of a cap and gown. |
| ACADEMISMS | • academisms n. Plural of academism. • ACADEMISM n. the doctrines of the Academic philosophy. |
| ACADEMISTS | • academists n. Plural of academist. • ACADEMIST n. a person belonging to an academy or society. |
| ACALCULIAS | • ACALCULIA n. an inability to do simple mathematical calculations, also DYSCALCULIA. |
| ACALEPHANS | • acalephans n. Plural of acalephan. • ACALEPHAN n. any cnidarian (a jellyfish), also ACALEPH, ACALEPHE. |
| ACANACEOUS | • acanaceous adj. (Very rare) Bearing prickles or thistles; prickly. • ACANACEOUS adj. bearing prickles or thorns. |
| ACANTHUSES | • acanthuses n. Plural of acanthus. • ACANTHUS n. a prickly plant with toothed leaves, also ACANTH, ACANTHA. |
| ACARICIDAL | • acaricidal adj. Deadly to acarids. • ACARICIDAL adj. relating to an acaricide, a substance that kills mites and ticks. |
| ACARICIDES | • acaricides n. Plural of acaricide. • ACARICIDE n. a substance that kills mites and ticks. |
| ACARIDEANS | • acarideans n. Plural of acaridean. • ACARIDEAN n. a mite or tick, also ACARIDIAN. |
| ACARIDIANS | • acaridians n. Plural of acaridian. • ACARIDIAN n. a mite or tick, also ACARIDEAN. |
| ACAROPHILY | • ACAROPHILY n. the symbiotic association of plants with mites. |
| ACARPELOUS | • acarpelous adj. Alternative spelling of acarpellous. • ACARPELOUS adj. (US) having no carpels, also ACARPELLOUS. |
| ACATALEPSY | • acatalepsy n. Incomprehensibility of things; the doctrine held by the ancient skeptic philosophers, that human knowledge… • ACATALEPSY n. the sceptic doctrine that knowledge cannot be certain. |
| ACATHISIAS | • ACATHISIA n. a psychological condition characterised by agitation and a frequent desire to alter the posture, also AKATHISIA. |