Convertible note
Debt that can convert into equity.
Also called convertible debt
A convertible note is a short-term debt instrument that can convert into equity in a later financing, often with interest, maturity, a valuation cap, and/or a discount.
Plain-English example
An investor lends $500K through a note with a discount. When the startup raises Series A, the note converts according to the note terms.
Watch out
Convertible notes are debt instruments; SAFEs usually are not.