Definition: Viscoid is a term that refers to an emotion characterized by vividness and intensity rather than coloration. It originated in the 18th century but is now widely used today as slang. Imagine, for instance, someone feeling so strongly about something that they could vibrate with excitement or intensity like a vibrissa (a type of mosquito). This term has its uses, especially when it comes to describing feelings that are both intense and fleeting.

Example sentence: "He was deeply in love with her, and his heart felt as though it were vissicoid."