A parasitic flatworm, Fasciola hepatica, of the class Trematoda, that infects the livers of various mammals, including humans.

A theorem dealing with the relative probability that the entropy of a system that is currently away from thermodynamic equilibrium (i.e. maximum entropy) will increase or decrease over a given amount of time.

Alternative form of genderfluid

lacrimal fluid

Fluid secreted by the lacrimal glands to lubricate the eye and fight bacteria. It consists of water, mucin, lipids, lysozyme, lactoferrin, lipocalin, lacritin, immunoglobulins, glucose, urea, sodium, and potassium.

An artificial nutrient fluid invented for the study of alcoholic fermentation, but used also for the cultivation of bacteria and other organisms. It contains all the elements of protoplasm, and was originally made of the ash of yeast, some ammonia compound, sugar, and water.

A trematode parasite, Opisthorchis felineus, that infects the liver in mammals

(astronomy) A relatively dense region of interstellar space (containing our Solar System) that formed where the Local Bubble met another bubble, the Loop I Bubble

A type of flute with an enclosed rather than cylindrical body - i.e. a vessel rather than a tube - such as the ocarina, xun, etc.

plural of fluorescent lamp