secondary (from lat. secondary ) 1 adj. It applies to certain things that occupy the second place in an established order: Secondary education . 2 adj. and n. m. Geol. It applies to the third geological age in the order, after the primary or Paleozoic era, to its lands and its things. Mesozoic. Cretaceous, Jurassic, Lhasic, Triassic. 3 adj. Not main or fundamental. Accessory. 4 Electr. It is applied to the circuit of a transformer through which the induced current passes. 5 Med. Applies to symptoms that are the effect of a certain disease. 6 adj. and n. Secondary actor. V. secondary effect, secondary sector .
