Definition of: magistral

(maj′is·trəl) adjective
1. Like a magistrate; imperious or pedagogical; magisterial.
2. In pharmacy, specially compounded or prescribed; not kept in stock.
3. Having sovereign power as a medicine.
4. Chief; main: the magistral line.
—noun Mil. The line from which the positions of the various members of a fortification are determined: also magistral line. [<F <L magistralis <magister a master]