Lexicon :: Strong's G4486 - rhēgnymi

ῤήγνυμι (Matthew 9:17) and ῤήσσω (Homer, Iliad 18, 571; 1 Kings 11:31; Mark 2:22 R G L marginal reading; Mark 9:18 (Luke 5:37 L marginal reading; (see below))); future ῤήξω; 1 aorist ἔρρηξα; present passive 3 person plural ῤήγνυνται; from Homer down; the Sept. for בָּקַע and קָרַע; to rend, burst or break asunder, break up, break through;
a. universally: τούς ἀσκούς, Mark 2:22; Luke 5:37; passive, Matthew 9:17; equivalent to to tear in pieces (A. V. rend): τινα, Matthew 7:6.
b. namely, εὐφροσύνην (previously chained up, as it were), to break forth into joy: Galatians 4:27, after Isaiah 54:1 (the full phrase is found in Isaiah 49:13; Isaiah 52:9; (cf. Buttmann, § 130, 5); in classical Greek ῥηγνύναι κλαυθμόν, οἰμωγήν, δάκρυα, especially φωνήν is used of infants or dumb persons beginning to speak; cf. Passow, under the word, 2, vol. ii., p. 1332{a}; (Liddell and Scott, under the word I. 4 and 5)).
c. equivalent to σπαράσσω, to distort, convulse: of a demon causing convulsions in a man possessed, Mark 9:18; Luke 9:42; in both passages many (so R. V. text) explain it to dash down, hurl to the ground (a common occurrence in cases of epilepsy); in this sense in Artemidorus Daldianus, oneir. 1, 60 a wrestler is said ῤῆξαι τόν ἀντιπαλον. Hesychius gives ῤῆξαι. καταβαλεῖν. Also ῥηξε. κατέβαλε. Cf. Kuinoel or Fritzsche on Mark 9:18. (Many hold that ῤήσσω in this sense is quite a different word from ῤήγνυμι (and its collateral or poetic ῤήσσω), and akin rather to (the onomatopoetic) ἀράσσω, ῤάσσω, to throw or dash down; cf. Lobeck in Alexander Buttmann (1873) Ausf: Spr. § 114, under the word ῤήγνυμι; Curtius, Das Verbum, pp. 162, 315; Schmidt, Syn., chapter 113, 7. See as examples Wis. 4:19; Hermas, mand. 11, 3 [ET]; Apostolic Constitutions, 6, 9, p. 165, 14. Cf. προσρήγνυμι.) (Compare: διαρηγνυμι, περιρήγνυμι, προσρήγνυμι.)

BLB Scripture Index of Thayer's