half double crochet; HDC
A crochet stitch that is taller than a single crochet but shorter than a double crochet. Used in patterns and craft instructions.
In this pattern, work 10 half double crochet stitches.
The height of a half double crochet is about half that of a double crochet.
Compound of 中 (chū, 'medium') + 長編み (nagaami, 'long stitch'), referring to a stitch of intermediate height in crochet.