autotelic: being an end in itself
auxology: science of growth
aveniform: shaped like oats
avionics: the science of electronic devices for aircraft
awn: beard or similar bristly growth on stalk of grain
azoth: alchemical name for mercury
bacchanal: drunkard; reveller
bactericide: killer of bacteria
badinage: playful repartee or banter
bahadur: self-important official
bakelite: type of solid plastic
balbutient: stammering
balistarius: crossbowman

Some of these definitions deserve challenge. "Bahadur" I have seen in Persian legends as
title of respect. Sure, it could be used as put-down to a present day self-appointed
bigshot, but the origin should not be forgotten.