| Subject | English | Japanese |
| radio | gain relative to a half-wave dipole | 半波長ダイポールアンテナに対する相対利得 |
| phys. | half wave | 半波 (はんぱ) |
| phys. | half-wave antenna | 半波空中線 (hanpa-kūchūsen) |
| radiol. | half-wave apparatus | 半波長装置 |
| antenn. | half-wave dipole | 半波長ダイポール (hanhachō-daipōru) |
| phys. | half-wave magnetic amplifier | 半波形磁気増幅器 (はんぱがた・ぢき・ぞうふくき) |
| el., sec.sys. | half-wave phase comparison protection | 片波位相比較保護 |
| antenn. | half-wave plate in a waveguide | 2分の1波長板 |
| phys. | half-wave potential | 半波電位 (はんぱ・でん'い) |
| phys. | half-wave rectification | 半波整流 (hanpa-seiryū) |
| phys. | half-wave rectifier | 半波整流器 (hanpa-seiryūki) |
| phys. | half-wave voltage | 半波長電圧 (はんはちょう・でん'あつ) |
| math. | negative half-wave | 負の半波 |
| math. | positive half-wave | 正の半波 |