ἐφόρμησις

English (LSJ)

(A), εως, ἡ, (ἐφορμέω)

   A lying at anchor so as to watch an enemy, blockading, Th.2.89, 8.15; means of so doing, Id.6.48; ἐ. παρασχεῖν Id.3.33.
ἐφόρμ-ησις (B), εως, ἡ, (ἐφορυάω)

   A onset, attack, ἐχθρῶν Ph.2.174; κατ' ἐχθρῶν ib.296: pl., App.BC5.106.    2 approach, Hld.8.9.