pro·no·grade 
(prōnə-grād′)
(prōnə-grād′)adj.
Walking with the long axis of the body parallel to the ground, as do most quadrupeds.
[Latin prōnus, leaning forward; see PRONE + -gradus, walking (from gradī, to move; see RETROGRADE).]
- uncomplimentary
- uncomprehending
- uncomprehendingly
- uncompromisable
- uncompromising
- uncompromisingly
- uncomputerized
- unconceivable
- unconceivably
- unconcern
- unconcerned
- unconcernedly
- unconcernedness
- unconditional
- unconditionality
- unconditionally
- unconditioned
- unconditionedness
- unconditioned response
- unconditioned stimulus
- unconformability
- unconformable
- unconformably
- unconformity
- uncongenial