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derivation: probably from the base of (2476)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=4728&version=kjv

(2476)
1] cause or make to stand, to place, put, set
   1.a] to bid to stand by, [set up]
       1.a.1] in the presence of others, in the midst, before judges, before members of the Sanhedrin;
       1.a.2] to place
   1.b] to make firm, fix, establish
       1.b.1] to cause a person or a thing to keep his or its place
       1.b.2] to stand, be kept intact (of family, a kingdom), to escape in safety
       1.b.3] to establish a thing, cause it to stand
2] to uphold or sustain the authority or force of anything
   2.a] to set or place in a balance
       2.a.1] to weigh: money to one (because in very early times before the introduction of coinage, the metals used to be weighed)
3] to stand
   3.a] to stand by or near
       3.a.1] to stop, stand still, to stand immovable, stand firm
   3.b] of the foundation of a building
   3.c] to stand
       3.c.1] continue safe and sound, stand unharmed, to stand ready or prepared
       3.c.2] to be of a steadfast mind
       3.c.3] of quality, one who does not hesitate, does not waiver
derivation: a prolonged form of a primary stao {stah'-o} (of the same meaning, and used for it in certain tenses)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=2476&version=kjv

A link to each occurrence of this word in the homepage:
1] strait