(soccer) A popular soccer formation with 4 defenders, 5 midfielders and 1 striker

(organic chemistry) A potent hallucinogenic drug that is a methyl ether of dimethyltryptamine.

Rush hour traffic.

Alternative form of five o'clock shadow

plural of 5 o'clock shadow

A diet that stipulates calorie restriction for two non-consecutive days per week but allows unconstrained eating on the other five days.

(organic chemistry) The crown ether 1,4,7,10,13-Pentaoxacyclopentadecane

plural of 5:2 diet

(chemistry) A yellow dye used as a food colouring.

(FD&C code) A color additive composed principally of tartrazine.