The word "mythologem" on page 55 of The Burning Fountain
by Philip Wheelwright, revised edition of 1968 (p. 91 in the 1954
edition), suggests a Web search for that word. It was notably often
used in the 1998 English translation of a book by Eleazar Meletinsky
first published in Russian in 1976 —
Meletinsky reportedly died on December 17, 2005.
In his memory, Log24 posts from that date are now tagged Mythologem Day.
"And we may see the meadow in December,
icy white and crystalline" — Johnny Mercer