Dictionary:

mucoid

  (myū'koid')

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Any of various glycoproteins, especially a mucoprotein, similar to the mucins.

Of, relating to, or resembling mucus.

Any of various glycoproteins similar to the mucins, especially a mucoprotein.

Of, containing, or resembling mucus.

1. resembling mucus.
2. a mucus-like conjugated protein of animal origin, differing from mucin in solubility.

• m. degeneration — see mucoid degeneration.
• m. enteritis — see mucoid enteropathy, irritable colon syndrome.
• m. valvular degeneration — see endocardiosis.

The noun has one meaning:

Meaning #1: any of several glycoproteins similar to mucin

The adjective mucoid has one meaning:

Meaning #1: relating to or resembling mucus
  Synonym: mucoidal
  Pertains to noun: mucus (meaning #1)