Definitions:

1. A piece of information that is widely believed to be true but is incorrect, often due to repeated misinformation. NOUN
   • The idea that humans use only 10% of their brain is a factoid, as the entire brain is active at various times.
2. A small fact or tidbit of information that is interesting but often lacks depth or significance. NOUN
   • Some factoids are harmless, while others can be harmful if they are believed to be true.
3. An inaccurate statement or statistic believed to be true because of broad repetion, especially if cited in the media. NOUN
   • Factoids can spread quickly on social media, blurring the line between truth and fiction.
4. An interesting item of trivia. NOUN
   • If there is no evidence to support a claim, then it is likely to be a factoid.

Synonyms:

• fun fact
• misinformation
• small fact
• tidbit
• trivia