hear - high
- heteropolar binding
- heteropolar linkage
- hexad
- hexad axis
- hexagonal cell
- hexagonal close-packed alloy
- hexagonal close-packed lattice
- hexagonal close-packed metal
- hexagonal close-packed modification
- hexagonal closest packing of spheres
- hexagonal cobalt
- hexagonal modification
- hexagonal section
- hexagonal wire
- hexagous
- HF spark injection
- HF unit
- hiccough
- hidden edge
- hidden surface