(In both the 12-hour clock and the 24-hour clock) The start of the fourth hour of the day; 3:00 a.m. (03:00). / (Only in the 12-hour clock) The start of the sixteenth hour of the day; 3:00 p.m. (15...

Right feeling.

(chemistry) A phenol derivative of anthracene which on oxidation produces a red dyestuff related to anthraquinone.

(organic chemistry) any of a class of aromatic tricyclic heterocycles used to make dyestuffs