OPSIN

“OPSIN” is a valid word.

7 Scrabble points

9 Words with Friends

5 letters

Definition

spina swift whirling motion (usually of a missile)
pinsa piece of jewelry that is pinned onto the wearer's garment
snipa small piece of anything (especially a piece that has been snipped off)
nipsa small drink of liquor
ionsa particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
piso
ponsUnited States coloratura soprano (born in France) (1904-1976)
piona meson involved in holding the nucleus together; produced as the result of high-energy particle collision
poisHawaiian dish of taro root pounded to a paste and often allowed to ferment

sona male human offspring
sinestrangement from god
pina piece of jewelry that is pinned onto the wearer's garment
sipa small drink
ops(Roman mythology) goddess of abundance and fertility; wife of Saturn; counterpart of Greek Rhea and Cybele of ancient Asia Minor
nipa small drink of liquor
iona particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
insan agency in the Department of Justice that enforces laws and regulations for the admission of foreign-born persons to the United States
psia unit of pressure
nos
poiHawaiian dish of taro root pounded to a paste and often allowed to ferment
soppiece of solid food for dipping in a liquid
ons
pis

ishave the quality of being; (copula, used with an adjective or a predicate noun)
ina unit of length equal to one twelfth of a foot
onin operation or operational
noa negative
sothe syllable naming the fifth (dominant) note of any musical scale in solmization
sia tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
op
pithe ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
osa mouth or mouthlike opening