-al meaning
EN
[əl] [æl] W-al
- The suffix -al is the IUPAC nomenclature used in organic chemistry to form names of aldehydes containing the -(CO)H group. It was extracted from the word "aldehyde".
FR -al 
- Suffix
- of or pertaining to; adjectival suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also.
- base, basal
- cranium, cranial
- Forming nouns, especially of verbal action.
- e.g. rival, proposal, denial
- (organic chemistry) Forms the names of aldehydes.
- of or pertaining to; adjectival suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also.
Definition of -al in English Dictionary
- Part-of-Speech Hierarchy
- Morphemes
- Suffixes
- Adjective-forming suffixes
- Noun-forming suffixes
- Adjective-forming suffixes
- Suffixes
- Morphemes
Source: Wiktionary
Grammatically, this word "-al" is a morpheme, more specifically, a suffixe.