adj
phosphorous
adj
1
Relating to or containing phosphorus, especially in its less-oxidized chemical form.
"The lab handled the phosphorous compound with extra care."
How to Use Phosphorous
Learner’s notesIn plain EnglishA technical adjective describing something that contains or relates to phosphorus.
Common mistake
Easy to confuse with the element name "phosphorus" (noun) — "phosphorous" is the adjective form.
Easily confused with
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The lab handled the _____ compound with extra care.