Question

What is the meaning of “MER“ in polymer?

Answer 1

Answer:

MER means:

A repeat unit is sometimes called a mer or mer unit. "Mer" originates from the Greek word "meros," which means a part. ... When the polymer is formed, the C=C double bond in the monomer is replaced by a C-C single bond in the polymer repeat unit, which links by two new bonds to adjoining repeat units.

Answer 2

Repeat unit

is the answer of your question

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repeat unit. A repeat unit or repeating unit is a part of a polymer whose repetition would produce the complete polymer chain (except for the end-groups) by linking the repeat units together successively along the chain, like the beads of a necklace. A repeat unit is sometimes called a mer or mer unit.