Definition of iota subscript in English:

iota subscript

noun

  • (in Greek) a small iota written beneath a long vowel, forming the second element of a diphthong but not pronounced and not always represented in transliteration.

    • ‘The iota subscript was created when the iota was reintroduced in the Byzantine period, to correct the loss of é from copies of earlier manuscripts.’
    • ‘Can someone tell me how to make a simple iota subscript using the Greek Polytonic keyboard layout?’