| ACICULUMS | • aciculums n. Plural of aciculum. • ACICULUM n. (Latin) a bristlelike part. |
| ACIDULOUS | • acidulous adj. Slightly sour; sub-acid; sourish. • acidulous adj. (Figurative) Sharp; caustic. • acidulous adj. Containing carbonic acid. |
| ACUMINOUS | • acuminous adj. Characterized by acumen; keen. • ACUMINOUS adj. characterized by acumen. |
| ASTUCIOUS | • astucious adj. Subtle; cunning; astute. • ASTUCIOUS adj. (Scott) of astute and penetrating discernment. |
| AUDACIOUS | • audacious adj. Showing willingness to take bold risks; recklessly daring. • audacious adj. Impudent, insolent. • AUDACIOUS adj. bold, also OUTDACIOUS. |
| AURICULAS | • auriculas n. Plural of auricula. • AURICULA n. (Latin) a species of Primula, or primrose, aka, from the shape of its leaves, bear's-ear. |
| AUTECIOUS | • AUTECIOUS adj. of parasites, completing the entire life cycle on a single species of host. |
| AUTOICOUS | • autoicous adj. (Botany) autoecious. • AUTOICOUS adj. having male and female reproductive organs on the same plant. |
| CAUCUSING | • caucusing v. Present participle of caucus. • CAUCUS v. to hold a political meeting. |
| FUGACIOUS | • fugacious adj. Fleeting, fading quickly, transient. • FUGACIOUS adj. lasting a short time, evanescent. |
| FURACIOUS | • furacious adj. (Obsolete) Given to theft; thievish. • FURACIOUS adj. (obsolete) given to thieving; thievish. |
| GUAIACUMS | • guaiacums n. Plural of guaiacum. • GUAIACUM n. a medicinal resin, also GUAIAC, GUAIOCUM. |
| GUAIOCUMS | • GUAIOCUM n. a medicinal resin, also GUAIACUM, GUAIAC. |
| PIRARUCUS | • pirarucus n. Plural of pirarucu. • PIRARUCU n. (Tupi) a large South American fish, aka arapaima. |
| UNMUSICAL | • unmusical adj. Not musical: lacking in musical ability. • unmusical adj. Not musical: unmelodic. • UNMUSICAL adj. not musical. |
| URANISCUS | • uraniscus n. (Anatomy) The palate or roof of the mouth. • URANISCUS n. (Greek) the roof of the mouth. |
| USUCAPION | • usucapion n. The acquisition of right or title to an object by means of the passage of time. The common law analogue… • USUCAPION n. the acquisition of a property through long usage, also USUCAPTION. |