- half life period
- half-life period
- half-light radius
- half line
- half-line
- half-linear
- half-martingale
- half maximal inhibitory concentration
- half-maximum line breadth
- half-metal
- half-metallic ferromagnet
- half-metallic magnetic materials
- half-metal materials
- half-model test
- half-module
- half moon
- half-Moses circle
- half-neighborhood
- half-normal distribution
- Half of a Yellow Sun
- half-open interval
- Hal Foster
- half page advertisement
- half-parameter
- half peak width