Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
μεσοπόρφυρα purple ornamentations LXX.Isa.3.21
μεσοπορφύρου of purple ornamentation LXX.Isa.3.24

Liddell-Scott-Jones

μεσοπόρφυρος (mesoporphuros) purple ornamentation G:N-M

μεσοπόρφυρος-πόρφῠρος, ον,

mixed or shot with purple, οὐχ ὅλως λευκὸν ἀλλὰ μ. [Refs 1st c.AD+]; τὰ μ. (i.e. ἱμάτια) [LXX]

LSJ Scripture Refs: LXX.Isa.3.20