plural of crystal habit

(crystallography) The characteristic external shape of an individual crystal or crystal group.

plural of habitable zone

(idiomatic) One who is prone to routine.

plural of creature of habit

(informal) Connecticut

plural of galactic habitable zone

plural of continuously habitable zone

(astrobiology, astronomy) the zone in a disk galaxy lying within the disk which is neither too far from the core so as to be lacking in heavier elements, nor too close to the core as to experience excessive exposures to supernovae, where intelligent life may develop

(astrobiology, astronomy) the restricted zone around a sun where the ever shifting habitable zone is always present throughout the main sequence lifetime of that star.