2 Letter Words starting with R

• in the matter of (used typically as the first word in the heading of an official document or to introduce a reference in a formal letter)

Synonyms: about, concerning, regarding, with regard to, relating to, apropos (of), on the subject of, respecting, in respect of, with respect to, with reference to, as regards, in the matter of, in connection with, referring to, touching on

• the chemical element rhenium

• each of the lines in which light (and heat) may seem to stream from the sun or any luminous body, or pass through a small opening

Synonyms: beam, shaft, streak, bar, pencil, finger, stream, gleam, flash, glint, glimmer, flicker, twinkle, shimmer

• a straight line extending indefinitely in one direction from a point

• a thing that is arranged radially

• a broad flat marine or freshwater fish with a cartilaginous skeleton, winglike pectoral fins, and a long slender tail. Many rays have venomous spines or electric organs

• (in tonic sol-fa) the second note of a major scale

• the chemical element of atomic number 75, a rare silvery-white metal which occurs in trace amounts in ores of molybdenum and other metals

• religious education (as a school subject)

• (in the UK) Royal Engineers