| ALLOCHTHON | • allochthon n. (Geology) A geological formation not formed in the region where found and moved to its present location… |
| AUTOCHTHON | • autochthon n. The earliest inhabitant of an area; an aborigine. • autochthon n. (Geology) A large mass of rock in the place of its original formation, rooted to its basement (foundation… • AUTOCHTHON n. one sprung from the ground he inhabits, aborigine, native. |
| DANTHONIAS | • danthonias n. Plural of danthonia. • DANTHONIA n. a tufted grass native to Australia and New Zealand. |
| DIPHTHONGS | • diphthongs n. Plural of diphthong. • DIPHTHONG n. a union of two vowels pronounced in one syllable. |
| DRUNKATHON | • DRUNKATHON n. a prolonged drinking session. |
| MARATHONER | • marathoner n. Someone who participates in a marathon or other long-distance races. • MARATHONER n. one who takes part in a marathon. |
| PHONATHONS | • PHONATHON n. a telephone-based fundraising campaign. |
| RADIOTHONS | • radiothons n. Plural of radiothon. • RADIOTHON n. a marathon talk-in on radio. |
| TALKATHONS | • talkathons n. Plural of talkathon. • TALKATHON n. a long talking session. |
| TRILITHONS | • trilithons n. Plural of trilithon. • TRILITHON n. (Greek) a stone monument of two upright and one transverse slab, also TRILITH. |
| TRIPHTHONG | • triphthong n. A monosyllabic vowel combination usually involving a quick but smooth movement from one vowel to another… • TRIPHTHONG n. three vowel sounds pronounced as one. |
| WALKATHONS | • walkathons n. Plural of walkathon. • WALKATHON n. a marathon walking event. |