I always thought a factoid was a tiny fact. Merriam Webster actually lists both meanings (small fact and non-fact). https://www.merriam-webster.com/dictionary

I always thought a factoid was a tiny fact. Merriam Webster actually lists both meanings (small fact and non-fact). https://www.merriam-webster.com/dictionary/factoid https://www.merriam-webster.com/dictionary/factoid