almost completely off topic but btw the o in spectrometer, speedometer, worldometer, whatever is called an interfix. you've heard of suffixes and prefixes, well

almost completely off topic but btw the o in spectrometer, speedometer, worldometer, whatever is called an interfix. you've heard of suffixes and prefixes, well interfixes unlike those two have no meaning other than to join two root words (as in words that can't be used as suffixes or prefixes).