semigloss adjective 1noun 1forms 1 adjective1 •Slightly shiny, between matte (or flat) and gloss.Prepolish the full face and edges of the stone, periodically dipping in water. Note the semigloss finish after this step. — 2025 noun1 •A slightly glossy paint.Good water-thinned semiglosses are relatively new[…] — 1971 formssemiglosses