-ic
/ɪk/suffix
1
- forming adjectives such as Islamic, terrific［构成形容词, 如Islamic, terrific］。
2
- forming nouns such as lyric, mechanic构成名词, 如lyric, mechanic。
3
- denoting a particular form or instance of a noun ending in -ics［表示以-ics 结尾名词的特殊形式或事例］：
aesthetic
dietetic
tactic.
4
- Chemistry denoting an element in a higher valency【化】表示高价元素：
ferric
sulphuric.
比较-OUS.
词源
from French -ique, Latin -icus, or Greek -ikos.