plural of orphaned work

A negative word or term (such as "disgruntled", "uncouth" or "incognito") that has no positive equivalent

A person, especially a child, with only one living parent.

A medicinal drug which is effective in the treatment of some disease(s), but which is not manufactured or marketed because the demand is insufficient to cover the costs of supply.

plural of half orphan

orphan drug

orphanage

plural of orphan disease

Any disease for which drugs are not usually developed because it is too rare to make the development profitable.

(physiology) A receptor that has a similar structure to other identified receptors but whose endogenous ligand has not yet been identified