noun
1 improvement to/on sth; process of improving sth
ADJECTIVE
▪ considerable , great
▪
A greater ~ of the categorization is possible.
▪ extra , further
▪ constant , continuous , progressive
▪
the progressive ~ of their accounting technique
▪ useful
▪
It is possible to add a few useful ~s to the basic system.
▪ technical
▪ modern
… OF REFINEMENT
▪ degree , level
VERB + REFINEMENT
▪ need , require
▪
The technology requires a great deal of ~.
▪ add , introduce
PREPOSITION
▪ ~ in
▪
a ~ in the masonry
▪ ~ on
▪
a ~ on previous methods
▪ ~ to
▪
to add a further ~ to the computer system
2 being polite/well educated; clever in design
ADJECTIVE
▪ great
▪
a woman of great ~ and beauty
VERB + REFINEMENT
▪ lack
▪
The kite was star-shaped and lacked the ~ of current designs.
PREPOSITION
▪ ~ in
▪
a lack of ~ in engine design
PHRASES
▪ a lack of ~