1. Of, pertaining to, or resembling, mucus; slimy, ropy, or stringy, and lubricous; as, a mucous substance.
2. Secreting a slimy or mucigenous substance; as, the mucous membrane. Mucous membrane.
(Science: anatomy) A form of connective tissue in an early stage of development, found in the umbilical cord and in the embryo, and also in certain tumours called myxomata.
Origin: L. Mucosus, fr. Mucus mucus.