名詞 dimer:

1. a compound whose molecules are composed of two identical monomers

形容詞 dim:

1. lacking in light; not bright or harsh
   同義詞：dim, subdued
2. lacking clarity or distinctness
   同義詞：dim, faint, shadowy, vague, wispy
3. made dim or less bright
   同義詞：dimmed, dim
4. offering little or no hope
   同義詞：black, bleak, dim
5. slow to learn or understand; lacking intellectual acuity
   同義詞：dense, dim, dull, dumb, obtuse, slow

di.mer

n.（名詞）
A molecule consisting of two identical simpler molecules.
二聚物：由兩個(gè)較簡單的相同分子形成的聚合物
A chemical compound consisting of such molecules.
二聚化合物：這種聚合物形成化合物

來源：
di-
di-
(poly)mer
(poly)mer

【引伸】
dimer.ic