A level that is not primary; it refers to something that acts as a supplement or a subordinate.

The second in order or importance; subordinate to a primary element.

दूसरी

English Usage: "Her concerns were secondary compared to the main issue at hand."

Hindi Usage: "उसकी चिंताएँ मुख्य मुद्दे की तुलना में दूसरी थीं।"

The capacity of an atom or a molecule to combine with others; often used in chemistry.

The number of different species an organism can interact with; in ecology, it reflects interactions with other species.

पारिस्थितिकी

English Usage: "The valency of a species can indicate its ecological role."

Hindi Usage: "एक प्रजाति की पारिस्थितिकी उसके पारिस्थितिकीय कार्य को सूचित कर सकती है।"