build-down 
(bĭlddoun′)
(bĭlddoun′)n.
A systematic numerical reduction, especially of nuclear weapons, in which more than one weapon or warhead is destroyed for every new one that is built.
[On the model of BUILDUP.]
- monomorphic
- monomorphism
- monomorphous
- Monongahela River
- mononuclear
- mononuclear phagocyte system
- mononucleosis
- mononucleotide
- monophagous
- monophagy
- monophobia
- monophobic
- monophonic
- monophonically
- monophony
- monophthong
- monophthongal
- monophyletic
- monophyletically
- monophyly
- Monophysite
- Monophysitic
- Monophysitism
- monoplane
- monoplegia