specialise meaning
ENFR spécialise 
- VerbSGspecialisesPRspecialisingPT, PPspecialisedSUF-ise
- Non-Oxford British English standard spelling of specialize.
- Non-Oxford British English standard spelling of specialize.
- More Examples
- Used in the Middle of Sentence
- Firms... which have specialised in the manufacture of ‘heavies’...
- I subclassed the Button class to create a more specialised FancyButton class for my user interface.
- Our Sauiour specialising and nominating the places in which these false prophets should teach his presence to be.
- Used in the Middle of Sentence
Definition of specialise in English Dictionary
- Part-of-Speech Hierarchy
- Morphemes
- Suffixes
- Words by suffix
- Words suffixed with -ise
- Words suffixed with -ise
- Words by suffix
- Suffixes
- Verbs
- Morphemes
- en specialised
- en specialises
Source: Wiktionary
Grammatically, this word "specialise" is a morpheme, more specifically, a suffixe. It's also a verb.