A surname. / Joe Biden, 46th and current president of the United States (2021–present).

plural of Biden

(US politics) A quip, phrase or aphorism commonly said by Joe Biden (born 1942), American politician and the 46th president of the United States.

plural of Bidenism

(derogatory) U.S. president Joe Biden.

(derogatory, humorous) Stimulus payments provided to US citizens during the Biden presidency.

(zoology) Having only two teeth. / (phonetics) articulated with both the upper and lower teeth.

(zoology) An organism that has only two teeth, especially a dinosaur of the infraorder Dicynodontia.

(historical) In Ancient Rome, a place that had been struck by lightning and consecrated and enclosed.

(zoology) Having only two teeth. / (botany) Having tooth-like projections that are themselves dentate. / (chemistry) Of a ligand, forming two separate chemical bonds to a coordinating metal ion.