REX is 3 letters long. It starts with the letter R and ends with the letter X
Dictionary definitions:
REX:
Dictionary definitions:
REX:
Type: noun
Definition: the reigning king (used following a name or in the titles of lawsuits, e.g. Rex v. Jones : the Crown versus Jones).
Definition: the reigning king (used following a name or in the titles of lawsuits, e.g. Rex v. Jones : the Crown versus Jones).