Crasis

I still don't know how to use the crasis perfectly.

Some men have peculiar symptoms, according to their temperament and crasis, which they had from the stars and those celestial influences […]

This is all that ever stagger'd my faith in regard to Yorick’s extraction, who, by what I can remember of him, and by all the accounts I could ever get of him, seem'd not to have had one single drop of Danish blood in his whole crasis

When in a crasis, a lene consonant […] is combined with an aspirated vowel, the lene is always changed (except in the Ionic dialect) into the corresponding aspirate […]