productive meaning
ENFR productive 
- AdjectiveCOMmore productiveSUPmost productivePREpro-SUF-ive
- Capable of producing something, especially in abundance; fertile.
- Yielding good or useful results; constructive.
- Of, or relating to the creation of goods or services.
- (linguistics, of an affix or word construction rule) Consistently applicable to any of an open set of words.
- (medicine) Of a cough, producing mucus or sputum from the respiratory tract.
- (medicine) Of inflammation, producing new tissue.
- Capable of producing something, especially in abundance; fertile.
- More Examples
- Used in the Middle of Sentence
- Potholes or sloughs formed by a glacier’s retreat from the central plains of North America, are now known to be some of the world’s most productive ecosystems.
- "Singing is the oldest, most effective and productive way to tackle girls," asserted the 37-year old, affectionately known as Ah Guan at Tan Chang Ren Music Station.
- Used in the Middle of Sentence
Definition of productive in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Adjectives
Source: Wiktionary
Grammatically, this word "productive" is an adjective.