sub-

prefix

• 1at, to, or from a lower level or position:subalpine
• lower in rank:subaltern subdeacon
• of a smaller size; of a subordinate nature:subculture

• 2somewhat; nearly; more or less:subantarctic

• 3denoting subsequent or secondary action of the same kind:sublet subdivision

• 4denoting support:subvention

• 5 Chemistry in names of compounds containing a relatively small proportion of a component:suboxide