trimer

名词 trimer:

1. a polymer (or a molecule of a polymer) consisting of three identical monomers

形容词 trim:

1. thin and fit
   同义词：spare, trim
2. of places; characterized by order and neatness; free from disorder
   同义词：shipshape, trim, well-kept
3. neat and smart in appearance
   同义词：clean-cut, trig, trim
4. severely simple in line or design
   同义词：tailored, trim