Nigella sativa
''Nigella sativa'' (common names, black caraway, black cumin, nigella or kalonji) is an annual flowering plant in the family Ranunculaceae, native to western Asia (Arabia, the Levant, Cyprus, Turkey, Iran and Iraq), and eastern Europe (Bulgari ...
''. Chemically, it is a
dimer
Dimer may refer to:
* Dimer (chemistry), a chemical structure formed from two similar sub-units
** Protein dimer, a protein quaternary structure
** d-dimer
** TH-dimer
* Dimer model, an item in statistical mechanics, based on ''domino tiling''
* ...