Suffix
-x
Used to represent a value that may vary: see x.
I teach all of the 30x classes. (referring to classes numbered 301, 302, 303, etc)
-x
(chiefly US, informal) Used to replace a /ks/ sound, especially in monosyllabic words ending in -cks or -ks.
clox (“clocks”), folx (“folks”), hax (“hacks”), pix (“pics”), punx (“punks”), snax (“snacks”), sox (“socks”)
-x
An abbreviation marker.
Dx (“diagnosis”), elex (“election”), Hx (“history”), pax (“passenger”), RX (“receive”), TX (“transmit”)
-x
(neologism) Used to replace a gendered suffix, such as in alumnx, Chicanx, Latinx.
-X
(sports) Abbreviation of -cross.