Editing Upsilon (section)

==Etymology==
The name of the letter was originally just {{lang|grc|υ}} ({{lang|grc-Latn|y}}, also called {{lang|grc|ὑ}} {{lang|grc-Latn|hy}}, hence ''[[hyoid bone|hyoid]]'', meaning 'shaped like the letter {{lang|grc|υ}}'), but the name changed to {{lang|grc|υ ψιλόν}} (={{lang|grc|υ}} {{lang|grc-Latn|psilon}}, 'u-plain' or 'u-simple') to distinguish it from {{lang|grc|οι}}, which had come to have the same {{IPA|[y]}} pronunciation.<ref>[[W. Sidney Allen]], ''Vox Graeca'', 3rd ed., Cambridge 1987, p. 69.</ref>