-O-


Meaning of -O- in English

Etymology: Greek, thematic vowel of many nouns and adjectives in combination

— used as a connective vowel originally to join word elements of Greek origin and now also to join word elements of Latin or other origin

speed o meter

elast o mer

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.