hy·po·phos·pho·rous acid 
(hī′pō-fŏsfər-əs, -fŏs-fôrəs)
(hī′pō-fŏsfər-əs, -fŏs-fôrəs)n.
A clear, colorless or slightly yellow oily liquid or deliquescent crystalline solid, H3PO2, used as a reducing agent.
- presence
- presence of mind
- present
- present
- presentability
- presentable
- presentableness
- presentably
- present arms
- presentation
- presentational
- presentative
- present-day
- Present-day English
- presentee
- presenteeism
- presenter
- presentient
- presentiment
- presentimental
- presently
- presentment
- presentness
- present participle
- present perfect