| ALLOCHTHONS | • allochthons n. Plural of allochthon. |
| ANACOLUTHONS | • anacoluthons n. Plural of anacoluthon. • ANACOLUTHON n. a sentence or construction lacking grammatical sequence. |
| AUTOCHTHONS | • autochthons n. Plural of autochthon. • AUTOCHTHON n. one sprung from the ground he inhabits, aborigine, native. |
| BENTHONS | • benthons n. Plural of benthon. • BENTHON n. the flora and fauna of the ocean floor, also BENTHOS. |
| DRUNKATHONS | • DRUNKATHON n. a prolonged drinking session. |
| MARATHONS | • marathons n. Plural of marathon. • MARATHON n. a long-distance race. |
| PHONATHONS | • PHONATHON n. a telephone-based fundraising campaign. |
| PYTHONS | • pythons n. Plural of python. • pythons n. (Bodybuilding, slang) Large and well-developed muscles in the upper arm. • Pythons n. Plural of Python. |
| RADIOTHONS | • radiothons n. Plural of radiothon. • RADIOTHON n. a marathon talk-in on radio. |
| SYNTHONS | • synthons n. Plural of synthon. • SYNTHON n. a constituent part in the synthesis process. |
| TALKATHONS | • talkathons n. Plural of talkathon. • TALKATHON n. a long talking session. |
| TELETHONS | • telethons n. Plural of telethon. • TELETHON n. an exceptionally long television programme to raise money for a charity or cause. |
| TRILITHONS | • trilithons n. Plural of trilithon. • TRILITHON n. (Greek) a stone monument of two upright and one transverse slab, also TRILITH. |
| ULTRAMARATHONS | • ultramarathons n. Plural of ultramarathon. • ULTRAMARATHON n. a footrace longer than a marathon. |
| WALKATHONS | • walkathons n. Plural of walkathon. • WALKATHON n. a marathon walking event. |