Foliage is the leaves of a plant taken all together. Dense foliage, autumn foliage, hide in the foliage.
It is a mass noun with no plural, and it means the leaves as a mass rather than any one of them. In America, going to look at autumn foliage is a whole seasonal industry, with forecasts published for when the colour will peak.
1nounfoliageThe leaves of a plant taken all together.
“The thick foliage of the jungle hid the path from view.”
foliage is leaves.
Middle French feuillage comes from feuille, a leaf, from Latin folium. The spelling was reshaped towards the Latin.
Latin
folium — leaf
Middle French
feuillage
Middle English
ffoylage
English, today
foliage
From earlier foilage, from Late Middle English ffoylage, from Middle French feuillage. The more recent form is influenced by Latin folium (“leaf”).
Etymology from Wiktionary, CC BY-SA