n.
Pronunciation: ˌ al-t ō - ' kyü-my ə -l ə s
Function: noun
Inflected Form: plural -li \ - ˌ l ī , - ˌ l ē \
Etymology: New Latin, from Latin altus + New Latin -o- + cumulus
Date: 1894
: a fleecy mid-altitude cloud formation consisting of large whitish globular masses with shaded portions ― see CLOUD illustration