(ˌhaɪpəʊfɒsˈfɒrɪk) or hypophosphorous (ˌhaɪpəʊˈfɒsfərəs)
adjective
chemistry
relating to phosphorus in a state of lower oxidation than phosphoric compounds
hypophosphoric in American English
(ˌhaipəfɑsˈfɔrɪk, -ˈfɑr-)
adjective
of or derived from hypophosphoric acid
Word origin
[1850–55; hypo- + phosphoric]This word is first recorded in the period 1850–55. Other words that entered Englishat around the same time include: boneyard, cloakroom, ethos, heavyweight, runoffhypo- is a prefix appearing in loanwords from Greek, where it meant “under” (hypostasis). On this model, hypo- isused, especially as opposed to hyper-, in the formation of compound words (hypothyroid). Other words that use the affix hypo- include: hypochondria, hypogynous, hypopituitarism, hypostasis, hypotonic