subpoenable /səˈpinəbəl/ adjective1 •Capable of being, or permitted to be, subpoenaed.MDC argues that since there is no statutory authority mandating inclusion of the access clause in the parties' contract, MDC's documents are not subpoenable under 31 U.S.C. § 54(c)(1) (Supp. IV 1980). — 1984 formsmore subpoenable · most subpoenable