alkalic
alkaline
basal
base
elemental
elementary
first
fundamental
grassroots
primary
radical
rudimentary
standard
underlying
ab ovo
aboriginal
acid
alkali
austere
bare
bare-bones
basilar
bedrock
biochemical
bottom
capital
central
chaste
chemical
chemicobiological
chemicoengineering
chemicomineralogical
chemicophysical
chemurgic
chief
constituent
constitutive
copolymeric
copolymerous
crucial
dimeric
dimerous
electrochemical
element
embryonic
essential
focal
foundational
generative
genetic
germinal
gut
heteromerous
homely
homespun
homogeneous
in embryo
in ovo
indispensable
commodity
good
programing language
programming language
trade good
additional
specific
diabasic