Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
ἐπίστασιν obstruction Acts.24.12
ἐπίστασίσ stoppage 2Cor.11.28

Liddell-Scott-Jones

ἐπίστασις, εως, ,

(ἐφίστημι) stopping, stoppage, [τῆς κοιλίης], οὔρου, [Refs 5th c.BC+]; . αἵματος sluggishness of the flow of blood, [Refs 4th c.BC+]; of the growth of trees, [Refs 4th c.BC+]; πρὸς ἐπίστασιν τῶν ἄλλων as a deterrent to others, [Refs 2nd c.AD+]

__2. violence, vehemence, ἐπαινεῖ τὴν Ζήνωνος πραγματείαν μετὰ δή τινος λαμπρᾶς . [Refs 5th c.BC+]
__II. (ἐφίσταμαι) stopping, halt, τοῦ στρατεύματος [Refs 5th c.BC+]; φροντίδων ἐπιστάσεις haltings of thought, anxious thoughts, [Refs 5th c.BC+]; opposed to κίνησις, [Refs 4th c.BC+]
__II.b. ἐπίστασιν ἔχει, πῶς.. there is a difficulty, as to how.., [Refs]
__II.2. stopping to examine a thing, observation, attention, τοῦτ᾽ ἄξιον ἐπιστάσεως, εἰ.. [Refs]; μετὰ . [Refs 2nd c.BC+]; μετὰ πολλῆς . καὶ φιλοτιμίας [Refs 5th c.BC+]; ἄγειν τινὰ εἰς . [Refs 2nd c.BC+]; ἐξ . ῥητέον carefully, [Refs]; medical treatment, care, πρὸς φλεγμονήν [Refs 2nd c.AD+]: generally, care, attention, [Refs 1st c.BC+]
__II.3. ={ἐπιστασία} 11, [Refs 1st c.BC+]; κατὰ τὴν . during his term as ἐπιστάτης, [Refs 6th c.BC+]; . ἔργων superintendence of works, [NT+5th c.BC+]; oversight of students, [Refs 1st c.BC+]
__II.4. beginning, . ποιεῖσθαι ἀπὸ.. [Refs 2nd c.BC+]; . τῆς ἱστορίας introduction, [Refs]; ἀρχὴ καὶ . τῆς κατασκευῆς method of setting about construction, [Refs 3rd c.BC+]
__II.5. scum on urine, [Refs 5th c.BC+]
__II.6. position in rear, τὴν . ἐπ᾽ ἀλλήλοις ἔχειν one behind the other, of ships, [Refs 2nd c.BC+]
__II.7. ={μέρος τι τῆς νεώς}, [Refs 5th c.AD+]; compare ἐπιστατήρ.
__III. onset, [LXX+NT]
__IV. ἐν ἐπιστάσει καὶ ἐν ἀπολογισμῷ, perhaps of land of which the rent has been raised, [Refs 2nd c.BC+]
__V. [Refs 5th c.AD+]

LSJ Scripture Refs: 2Cor.11.28Acts.24.12