A state of Mana (mind);
the mind which is totally engrossed in a particular object which is to be known or which is one's objective.
tasya devadattādestasmin vā ghaṭādau manastanmanah, tatodevadattād anyasya yajnadattāderdhaṭāpeksayā paṭādau vā manastadanyamanaḥ, avivakṣitasambandhitaviśeṣaṃ tu manomātraṃ noamana iti.
(Sthā 3.357 Vṛ Pa 132)
See - Tadanyamana, Noamana.