- nebula - a medicinal liquid preparation intended for use in an atomizer
--1 is a kind of formulation, preparation
- nebula - cloudiness of the urine
--2 is a kind of symptom
- nebula - an immense cloud of gas (mainly hydrogen) and dust in interstellar space
--3 is a kind of cloud
--3 has particulars: diffuse nebula, gaseous nebula; planetary nebula- nebula - (pathology) a faint cloudy spot on the cornea
--4 is a kind of spot, speckle, dapple, patch, fleck, maculation
- nebula - cloudiness of the urine