As adjectives the difference between chiral and semichiral
is that chiral is of an object that exhibits chirality, as in the left-handed and right-handed versions of a helix while semichiral is (physics) describing a field that has chiral characteristics in some, but not all, dimensions.
chiral
English
(chirality)
Adjective
(-)
Of an object that exhibits chirality, as in the left-handed and right-handed versions of a helix.
semichiral
English
Alternative forms
*semi-chiral
Adjective
(-)
(physics) Describing a field that has chiral characteristics in some, but not all, dimensions