Enoch Forrester submitted a cite for the form "tri-dee" from a 1983 reprint of Alan Dean Foster's "The Tar-Aiym Krang"; Douglas Winston verified the cite in the 1972 first edition. Malcolm Farmer submitted a 1966 cite for the form "tri-dee" from Keith Roberts' "Synth". Ethan Merritt submitted a cite for the form "tri-dee" from a 1968 reprint of Andre Norton's "Star Hunter"; Mike Christie verified the cite in the 1961 first edition. Mike Christie submitted a cite for the form "tridee" from a 1984 reprint of Andre Norton's 1970 "Dread Companion". Mike Christie submitted a cite for the form "tridee" from a 1977 reprint of Roger Zelazny's 1973 "To Die In Italbar". Enoch Forrester submitted a cite for the form "tridee" from a 1982 reprint of Larry Niven's "World of Ptavvs"; Mike Christie verified the cite in a 1977 edition and also checked the 1965 first magazine appearance: the word is "threevee" in that version. Dan Tilque submitted a cite from a 1972 reprint of Larry Niven's "Ringworld" for the form "tridee"; Treesong verified the cite in the 1970 first edition. Mike Christie submitted a 1966 cite for the form "tri-dee" from Roger Zelazny's "This Moment of the Storm". Mike Christie submitted a cite for the form tri-dee from a 1962 reprint of Andre Norton's 1961 "Catseye". Katrina Campbell submitted a cite for the form "tridee" from a 1986 reprint of Alan Dean Foster's 1984 "Voyage to the City of the Dead".