equal
aligned
amidships
analogous
average
center
centermost
central
coextending
coextensive
collateral
concurrent
core
equatorial
equispaced
even
halfway
interior
intermediary
intermediate
lined up
mean
medial
median
mediocre
mediterranean
medium
mesial
mezzo
mid
middle
middlemost
middling
midland
midmost
midships
midway
nonconvergent
nondivergent
nuclear
parallel
parallelepipedal
parallelinervate
paralleling
parallelodrome
parallelogrammatic
parallelogrammic
parallelotropic