| ETHOXIDES | • ethoxides n. Plural of ethoxide. • ETHOXIDE n. a type of saltlike compound with metal and organic components, also ETHYLATE. |
| EXARCHIST | • exarchist n. A supporter of the exarch. • EXARCHIST n. a supporter of the Bulgarian exarch. |
| HEXASTICH | • hexastich n. A poem consisting of six verses or lines. • HEXASTICH n. a poem or stanza of six lines, also HEXASTICHON. |
| HOMOTAXIS | • homotaxis n. (Biology) similarity in arrangement of parts. • homotaxis n. (Geology) similarity in the lithostratigraphic or biostratigraphic vertical sequence of rock strata… • HOMOTAXIS n. coincidence in order of organic succession but not necessarily in time. |
| HYPOTAXIS | • hypotaxis n. (Grammar) Syntactic subordination of one clause or construction to another. • HYPOTAXIS n. a dependent or subordinate relationship of clauses with conjunctions. |
| METHOXIES | • METHOXY n. a drug that is claimed to increase muscle size and is taken as a supplement by some athletes. |
| ORTHOAXIS | • ORTHOAXIS n. in crystallography, the orthodiagonal. |
| RHEOTAXIS | • rheotaxis n. (Biology) movement in response to a current (of water or air). • RHEOTAXIS n. the movement of an organism in response to a current of water. |
| SIXTEENTH | • sixteenth adj. The ordinal form of the number sixteen. • sixteenth n. One of sixteen equal parts of a whole. • SIXTEENTH adj. number sixteen in sequence. |
| SIXTIETHS | • sixtieths n. Plural of sixtieth. • SIXTIETH n. one of sixty equal parts. |
| TAXIARCHS | • taxiarchs n. Plural of taxiarch. • TAXIARCH n. an Athenian military officer commanding a certain division of an army. |
| THYROXINS | • thyroxins n. Plural of thyroxin. • THYROXIN n. an iodine compound, a hormone forming the active principle of the thyroid gland, also THYROXINE. |
| XANTHEINS | • xantheins n. Plural of xanthein. • XANTHEIN n. a soluble yellow colouring. |
| XANTHINES | • xanthines n. Plural of xanthine. • XANTHINE n. a white substance, structurally related to uric acid, found in muscle tissue, the liver and other organs, also XANTHIN. |
| XANTHISMS | • XANTHISM n. a condition of skin, fur or feathers in which yellow coloration predominates. |
| XENOLITHS | • xenoliths n. Plural of xenolith. • XENOLITH n. (Greek) a rock fragment foreign to the igneous mass in which it occurs. |