| APTERYX | • apteryx n. (Dated) kiwi bird. • Apteryx prop.n. A taxonomic genus within the family Apterygidae – the kiwis. • APTERYX n. (Greek) one of a genus of New Zealand birds that includes the kiwi. |
| ARCHAEOPTERYX | • archaeopteryx n. Alternative spelling of archeopteryx. • Archaeopteryx prop.n. A taxonomic genus within the family Archaeopterygidae – known from fossils and widely accepted as the… • archæopteryx n. Rare spelling of archeopteryx. |
| BOMBYX | • bombyx n. Any member of the genus Bombyx of true silkmoths, whose caterpillars often feed on mulberries. • Bombyx prop.n. A taxonomic genus within the family Bombycidae – silkworms. • BOMBYX n. (Greek) a moth of the genus Bombyx, which includes the silkworm moth. |
| BOSTRYX | • bostryx n. (Botany) A helicoid cyme. • BOSTRYX n. (Greek) a type of inflorescence, a way in which flower stems are arranged. |
| CALYX | • calyx n. (Botany) The outermost whorl of flower parts, comprising the sepals, which covers and protects the petals… • calyx n. (Zoology, anatomy) Any of various cup-like structures. • CALYX n. (Greek) the outer protective covering of a flower. |
| CARNYX | • carnyx n. (Music, historical) A bronze wind instrument used by Iron Age Celts (C. 200 B.C.E. – 200 C.E.) as a… • CARNYX n. a long war trumpet used by the Celts. |
| CHALCEDONYX | • chalcedonyx n. (Mineralogy) An agate formed of a white opaque chalcedony alternating with a greyish translucent chalcedony. • CHALCEDONYX n. an agate of alternating white opaque and greyish transparent chalcedony. |
| COCCYX | • coccyx n. (Medicine, formal) The final (bottom-most) fused vertebrae at the base of the spine, the tailbone. • COCCYX n. (Greek) a bone of the spine. |
| EPICALYX | • epicalyx n. (Botany) A group of bracts resembling a calyx. • EPICALYX n. a set of bracts resembling a calyx. |
| NECTOCALYX | • nectocalyx n. (Zoology) The swimming bell or umbrella of a jellyfish or medusa. • nectocalyx n. (Zoology) One of the zooids of certain Siphonophorae, having somewhat the form, and the essential structure… • NECTOCALYX n. the swimming bell or umbrella of a jellyfish of medusa. |
| ONYX | • onyx n. (Mineralogy) A banded variety of chalcedony, a cryptocrystalline form of quartz. • onyx n. A jet-black color, named after the gemstone. • onyx n. Any of various lycaenid butterflies of the genus Horaga. |
| ORYX | • oryx n. Any of several antelopes, of the genus Oryx, native to Africa, which have long, straight horns. • Oryx prop.n. A taxonomic genus within the family Bovidae – the oryxes. • ORYX n. a kind of African antelope. |
| POMPHOLYX | • pompholyx n. (Medicine) dyshidrosis. • pompholyx n. (Chemistry, obsolete) impure zinc oxide. • POMPHOLYX n. (Greek) a vesicular eruption or eczema chiefly on the palms and soles. |
| PYX | • pyx n. (Christianity, also figurative) A small, usually round container used to hold the host (“consecrated… • pyx n. (By extension, rare) A (small) box; a casket, a coffret. • pyx n. (Chiefly Britain) A box used in a mint as a place to deposit sample coins intended to have the fineness… |
| SARDONYX | • sardonyx n. A gemstone having bands of red sard; a variety of onyx or chalcedony. • sardonyx n. (Heraldry) A tincture of sanguine colour when the blazoning is done by precious stones. • SARDONYX n. (Greek) an onyx with alternate layers of sard and other mineral. |