• first order phase transition

प्रथम:    primate pro prim primus quick opening aboriginal

प्रथम कोटि:    first grade first order प्रथम primate

कोटि:    category ordinate order rate grade degree rank

प्रावस्था:    phase

प्रावस्था संक्रमण:    phase transition प्रावस्था

संक्रमण:    contagion transition infection move transit