reg·u·late 
(r
ĕg
y
ə-l
āt
′)
tr.v. reg·u·lat·ed,
reg·u·lat·ing,
reg·u·lates 1. To control or direct according to rule, principle, or law.
2. To adjust to a particular specification or requirement: regulate temperature.
3. To adjust (a mechanism) for accurate and proper functioning.
4. To put or maintain in order: regulate one's eating habits.
[Middle English, from Late Latin rēgulāre, rēgulāt-, from Latin rēgula, rod, rule; see reg- in the Appendix of Indo-European roots.]
regu·la′tive, regu·la·to′ry (-lə-tôr′ē) adj.