“TRONA” is a valid word. — 5 points Scrabble

tornhaving edges that are jagged from injury
taroedible starchy tuberous root of taro plants
ranta loud bombastic declamation expressed with strong emotion
tora
roana soft sheepskin leather that is colored and finished to resemble morocco; used in bookbinding
rota(Roman Catholic Church) the supreme ecclesiastical tribunal for cases appealed to the Holy See from diocesan courts
tarna mountain lake (especially one formed by glaciers)
nota
rato

notnegation of a word or group of words
ranmove fast by using one's feet, with one foot off the ground at any given time
artthe products of human creativity; works of art collectively
nor
ratany of various long-tailed rodents similar to but larger than a mouse
tona United States unit of weight equivalent to 2000 pounds
rota state of decay usually accompanied by an offensive odor
tana browning of the skin resulting from exposure to the rays of the sun
antsocial insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers
taoan adherent of any branch of Taoism
tarany of various dark heavy viscid substances obtained as a residue
tora prominent rock or pile of rocks on a hill
oaran implement used to propel or steer a boat
oraa mouth or mouthlike opening
oatannual grass of Europe and North Africa; grains used as food and fodder (referred to primarily in the plural: `oats')
ort

to
onin operation or operational
noa negative
ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
anan associate degree in nursing
ora state in northwestern United States on the Pacific
naa silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
ara colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

TRONA