| ANTEMERIDIAN | • antemeridian adj. Of or relating to morning; that happens in the morning. • ANTEMERIDIAN adj. occurring before midday. |
| CANTHARIDIAN | • cantharidian adj. Composed of cantharides. • CANTHARIDIAN adj. of or like a cantharid, also CANTHARIDAL, CANTHARIDIC. |
| DIPRIONIDIAN | • diprionidian adj. (Paleontology, of a graptolite) Having a polyparium with a row of cells on each side. • DIPRIONIDIAN adj. of graptolites, serrated on both sides. |
| EPHEMERIDIAN | • EPHEMERIDIAN adj. of or like an ephemerid, an insect of the mayfly family. |
| GUARDIANSHIP | • guardianship n. The office or position of one acting as a guardian or conservator, especially in a legal capacity. • GUARDIANSHIP n. the office of guardian. |
| IRRADIANCIES | • irradiancies n. Plural of irradiancy. • IRRADIANCY n. the act of irradiating, also IRRADIANCE. |
| MILLIRADIANS | • milliradians n. Plural of milliradian. • MILLIRADIAN n. a thousandth of a radian. |
| MONOCARDIANS | • MONOCARDIAN n. a creature that has only one heart. |
| NULLIFIDIANS | • nullifidians n. Plural of nullifidian. • NULLIFIDIAN n. one of no faith or religion; a skeptic in matters of religion. |
| PARADOXIDIAN | • PARADOXIDIAN adj. belonging to the Paradoxides, a Middle Cambrian genus of trilobites. |
| PINNIPEDIANS | • PINNIPEDIAN n. a pinniped. |
| POSTMERIDIAN | • postmeridian adj. Of or pertaining to the afternoon. • POSTMERIDIAN adj. taking place after noon. |
| PROBOSCIDIAN | • proboscidian adj. Alternative spelling of proboscidean. • proboscidian n. Alternative spelling of proboscidean. • PROBOSCIDIAN n. any of an order of large mammals comprising the elephants and extinct related forms, also PROBOSCIDEAN. |
| SCINCOIDIANS | • Scincoidians n. Plural of Scincoidian. • SCINCOIDIAN n. a member of the skink family. |
| VELOCIPEDIAN | • velocipedian n. (Archaic) One who rides a velocipede, or a bicycle. • VELOCIPEDIAN n. one who rides a velocipede, an early form of bicycle, also VELOCIPEDEAN, VELOCIPEDER, VELOCIPEDIST. |