a. [See CO- 2.] Feeling in company or together with, jointly sentient. (Cf. CONSENTIENT.)
1801. Southey, Thalaba, V. xxviii. For of himself Co-sentient and inseparable parts The snaky torturers grew.
So Co-sentiency, co-sentient quality.
1884. Gurney & Myers, in 19th Cent., May, 809. The obscure pervasive co-sentiency of man and man.