the.com/dimer

Two identical molecules holding hands so tight chemists give them a joint name.

means A molecule made of two identical (or closely similar) smaller molecules, called monomers, bonded or bound together.

from Built in chemistry's favorite style: Greek 'di-' meaning two, plus '-mer' from 'meros,' meaning part or share — the same '-mer' that gives you 'polymer' (many parts) and 'monomer' (one part). So a dimer is simply the 'two-part' thing, named by the same logic that named all its molecular relatives.

etymology
di plus meros, greek for two parts
dna connection
thymine dimers from uv light cause skin cancer
covid test clue
d dimer blood levels flag dangerous blood clots
bonding types
held by covalent bonds or weaker intermolecular forces
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