“LIXIVIAL” is a valid word. — 18 points Scrabble

viala small bottle that contains a drug (especially a sealed sterile container for injection by needle)
vail
vill
iliaan ancient city in Asia Minor that was the site of the Trojan War
axilthe upper angle between an axis and an offshoot such as a branch or leafstalk
ixiaa monocotyledonous genus of the family Iridaceae

allquantifier; used with either mass or count nouns to indicate the whole number or amount of or every one of a class
illan often persistent bodily disorder or disease; a cause for complaining
via
laxlacking in rigor or strictness
ailaromatic bulb used as seasoning
vax
lava room or building equipped with one or more toilets

laa white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
ala silvery ductile metallic element found primarily in bauxite
lia soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
aian agency of the United States Army responsible for providing timely and relevant and accurate and synchronized intelligence to tactical and operational and strategic level commanders
axan edge tool with a heavy bladed head mounted across a handle
xithe cardinal number that is the sum of ten and one

LIXIVIAL