“THIONIN” is a valid word. — 10 points Scrabble

ninthposition nine in a countable series of things
inionthe craniometric point that is the most prominent point at the back of the head (at the occipital protuberance)
niton

notnegation of a word or group of words
hit(baseball) a successful stroke in an athletic contest (especially in baseball)
hotused of physical heat; having a high or higher than desirable temperature or giving off heat or feeling or causing a sensation of heat or burning
inna hotel providing overnight lodging for travelers
tona United States unit of weight equivalent to 2000 pounds
hon
tina silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide
iona particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
noh
thoa branch of the Tai languages
nita luminance unit equal to 1 candle per square meter measured perpendicular to the rays from the source
hinancient Hebrew unit of liquid measure = 1.5 gallons
nthlast or greatest in an indefinitely large series

to
itthe branch of engineering that deals with the use of computers and telecommunications to retrieve and store and transmit information
ina unit of length equal to one twelfth of a foot
onin operation or operational
noa negative
oha midwestern state in north central United States in the Great Lakes region
hian expression of greeting
hoa trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds
tia light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite

THIONIN