“XANTHAN” is a valid word. — 17 points Scrabble

than
annaa former copper coin of Pakistan and India
nana
naanleavened bread baked in a clay oven in India; usually shaped like a teardrop
anta
hant
taxaanimal or plant group having natural relations

aahexpress admiration and pleasure by uttering `ooh' or `aah'
hatheaddress that protects the head from bad weather; has shaped crown and usually a brim
nah
taxcharge against a citizen's person or property or activity for the support of government
aha
anamother of the ancient Irish gods; sometimes identified with Danu
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
nanyour grandmother
nthlast or greatest in an indefinitely large series

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
anan associate degree in nursing
ah
ha(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day
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
axan edge tool with a heavy bladed head mounted across a handle
aaa dry form of lava resembling clinkers

XANTHAN