mu·cin 
(mysĭn)
(mysĭn)n.
Any of a group of glycoproteins found especially in the secretions of mucous membranes.
mucin·ous adj.
- investigative
- investigator
- investigatorial
- investigatory
- investiture
- investment
- investment bank
- investor
- inveteracy
- inveterate
- inveterately
- inveterateness
- inviability
- inviable
- invidious
- invidiously
- in view of
- invigorate
- invigoratingly
- invigoration
- invigorator
- invincibility
- invincible
- invincibleness
- invincibly