median lethal dose
noun
The dose of a drug or of ionizing radiation that kills 50 per cent of test subjects; symbol LD50.
Origin
1920s.
- diffraction grating
- diffractive
- diffractively
- diffractometer
- diffuse
- diffusely
- diffuseness
- diffuser
- diffusible
- diffusion
- diffusional
- diffusionism
- diffusionist
- diffusion line
- diffusion range
- diffusive
- diffusivity
- diffusor
- différance
- dig
- dig a hole for oneself (or dig oneself into a hole)
- Digambara
- digamma
- dig a pit for
- digastric