an ammoniac salt; ammoniacal gas

[…]the inner layer (of nearly equally large cells) lacks the regular semiannular or annular thickenings of most other leafy liverworts[…]

Gerty MacDowell who was seated near her companions, lost in thought, gazing far away into the distance was, in very truth, as fair a specimen of winsome Irish girlhood as one could wish to see.

The language [OCaml]’s rigor is like catnip to some people, though, giving Jane Street an unusual advantage in the tight hiring market for programmers.