(anatomy) A group of neurons located in the rostral ventrolateral medulla and ventral respiratory column in mammals. It plays an important role in controlling breathing and responding to hypoxia.

plural of K-complex

plural of Electra complex

(psychoanalysis) A delusional state where the subject believes that he or she is struggling for a just and noble cause.

(biology) A group of closely related species that are very similar in appearance to the point that the boundaries between them are often unclear.

plural of species complex

plural of inferiority complex

plural of activated complex

plural of QRS complex

plural of attributional complexity