What Is The Origin Of "Sleep Tight"?
Definition of -aceous in English:
-aceous
suffix
1Botany
Forming adjectives from family names ending in -aceae (such as ericaceous from Ericaceae).2Biology Geology
Forming adjectives describing similarity, especially in shape, texture, or colour.‘arenaceous’‘olivaceous’
Origin
From Latin -aceus ‘of the nature of’ + -ous.
