Noun
key frame (plural key frames)
Alternative form of keyframe
For 2D vector animations, the rendering process is the key frame illustration process, while tweened frames are rendered as needed. Source: Internet
For example, a key frame could be set to indicate the point at which audio will have faded up or down to a certain level. Source: Internet
For example, a key frame may be output once for each 10 seconds of video, even though the video image does not change enough visually to warrant the automatic creation of the key frame. Source: Internet