A unit of measurement equal to one-tenth of a line (a line being one-twelfth of an inch), used in old printing and typography.
From Old French 'gré' meaning a degree or step, ultimately from Latin 'gradus'; the term specialized in printing to describe minute divisions of space.
A 'gry' is so small that it's barely visible to the naked eye—printers needed this measurement because the difference between a beautiful page and an ugly one was measured in fractions of fractions of an inch.
Complete word intelligence in one call. Free tier — 50 lookups/day.