(Note: This glossary is also available at the end of the ebook and print editions of Fourth World.)
* masculine nouns typically end in –os, feminine nouns typically end in –in
- ALOS/ALIN – an affectionate term for a child
- ANNUAL – birthdate
- ELYTHERIOS – a word in the old Iamoi language, dating to before the Progression. It means “freedom.” The Liberator’s faction has co-opted much of the old language, including this word.
- ENILIKIN – a person’s eighth annual (approximately sixteen in Earth years), signifying the transition from childhood to adulthood. A person who is now an adult is called an enilin or enilos.
- ESOTOI – the middle caste of the Iamoi, who work alongside both patroi and plivoi
- FRAOULOI – known in Isaak’s time as the “spider weed”; a resilient, woody black plant that can grow in almost any condition
- GEROI – the governors of a citidome (singular: gerouin [feminine], geros [masculine])
- GEROTUS – the united body of all geroi on Iamos and Hamos, similar to a senate
- HAMOS – Venus
- HAOI IFAISTEOI – “The Three Mountains”; the Iamoi’s name for the three Martian shield volcanoes we know as Elysium Mons, Hecates Tholus, and Albor Tholus
- IAMOS – Mars
- KYRIOS/KYRIN – a formal term of address, its closest English equivalent being “lord” or “lady”
- PATROI – the most prestigious caste of the Iamoi
- PLIVOI – the bottom caste of the Iamoi, considered to be the “drudges”
- S.C.D. – “System Collective Date”; the annual-count system of the Iamoi, dating back to when the System estimates human civilization first arose on Iamos
- SIMOS – Earth
- YACUNOS/YACHIN – beloved, sweetheart