Endergonic
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Endergonic means to absorb energy in the form of work. Its etymology stems from the suffix -ergonic as derived from the Greek root ergon meaning to work, combined with the prefix end- as derived from the Greek root en meaning put into. By thermodynamic standards, work, a form of energy, is defined normally to move from the system (the internal region) to the surroundings (the external region). Thus, an endergonic process, as contrasted with an exergonic process, is one where the system absorbs energy from the surroundings. Subsequently, during an endergonic process energy is put into the system. If the transformation occurs at constant pressure and temperature: ∆G > 0.