ex·pa·ti·ate 
(ĭk-spāshē-āt′)
(ĭk-spāshē-āt′)intr.v. ex·pa·ti·at·ed, ex·pa·ti·at·ing, ex·pa·ti·ates
1. To speak or write at length: expatiated on the subject until everyone was bored.
2. To wander freely.
[Latin expatiārī, expatiāt- : ex-, ex- + spatiārī, to spread (from spatium, space).]
ex·pa′ti·ation n.
- monometallism
- monometallist
- monometer
- monomial
- monomolecular
- monomolecularly
- monomorphic
- monomorphism
- monomorphous
- Monongahela River
- mononuclear
- mononuclear phagocyte system
- mononucleosis
- mononucleotide
- monophagous
- monophagy
- monophobia
- monophobic
- monophonic
- monophonically
- monophony
- monophthong
- monophthongal
- monophyletic
- monophyletically