serotinal meaning
ENFR sérotinal 
- AdjectivePREséro-SUF-inal
- Pertaining to or occurring in late summer.
- Pertaining to or occurring in late summer.
Definition of serotinal in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Uncomparable adjectives
- Uncomparable adjectives
- Adjectives
Other Vocabulary
- fr sérotinal
- fr sérotinale
- en serotine
- fr sérotine
- en erotical
Source: Wiktionary
Grammatically, this word "serotinal" is an adjective, more specifically, an uncomparable adjective.