Plain English Meaning
A climb where the aircraft gains height at a steady number of feet per minute, such as 500 feet every minute, all the way up to the assigned altitude.
Full Definition
A climb flown at a specific, unchanging rate of altitude gain, expressed in feet per minute on the vertical speed indicator (VSI). The pilot adjusts pitch to hold the target rate and adjusts power as needed to maintain a chosen airspeed.
Context Anchor
Seen in instrument flying when a pilot sets and holds a specific climb rate while watching the flight instruments.