Initialism is a word I had not seen nor heard before today’s blogpost at Grammarphobia.com, written by the brilliant and hilarious Patricia T. O’Conner, she of Woe Is I fame (among her many other linguistic accomplishments).
Her post was about using or omitting apostrophes in abbreviations. A reader asked Pat which plural was correct: PJs, PJ’s, pjs pj’s, P.J.’s. The answer is that you can find support for just about every variant, but the most commonly accepted seems to be plain old PJs. That is, unless your PJ’s pants (possessive) have a hole in the seat.
Did you know that PJs is an initialism? Neither did I. It means an abbreviation pronounced by saying each letter separately : PJs, USA, ATM, TV, RPMs, IRS, DOJ, UCLA, NYU, OMG, for example.
When you pronounce an abbreviation as a word, that is an acronym. (I’ve discussed this before in my blog.) An acronym is an abbreviation, but not all abbreviations are acronyms. Here are some acronyms: NASA, scuba (so common it’s lost its caps), radar (ditto), fubar (look it up), RAM, AWOL, POTUS, SCOTUS, FLOTUS.
This post is my holiday gift to you. What? You were expecting jewelry, candy, money? I’ll see what I can come up with, ASAP. Until then, enjoy the day.