sam-arthana n. (or ā f.) reflection, deliberation, contemplation (○naṃ-√kṛ, 'to reflect, consider') MBh. Kathās
• reconciling differences, reconciliation W
• objecting, objection ib
• (ā), f. persuasion, invitation MBh
• insisting on what is impossible Vop
• (am), n. establishing, maintaining, corroboration, vindication, justification Pratāp. Kuval
• energy, force, ability, competence (āt, with gen., 'by virtue of') MBh 

Sanskrit-English Dictionary, by M. Monier William