middle Wednesday 12 realizations
NEW Realization 1
Type Derivation
Language Bosnian
Lexeme 1 srěda
Lexeme 2 Srijeda
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference <personally collected data>
Comment

Proto-Slavic *serda.

srijeda - Wiktionary

NEW Realization 2
Type Derivation
Language Bulgarian
Lexeme 1 срѣда
Lexeme 2 Сряда
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference <personally collected data>
Comment old bulgarian
Сряда – Уикипедия (wikipedia.org)
NEW Realization 3
Type Derivation
Language Czech
Lexeme 1 střed
Lexeme 2 středa
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference Buck 2008: 1007
Comment
NEW Realization 4
Type Derivation
Language Finnish
Lexeme 1 Keski
Lexeme 2 Keskiviikko
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference <personally collected data>
Comment

keskiviikko - Wiktionary

NEW Realization 5
Type Derivation
Language German
Lexeme 1 mitte
Lexeme 2 Mittwoch
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference <personally collected data>
Comment https://www.dwds.de/wb/etymwb/mittwoch
NEW Realization 6
Type Derivation
Language Icelandic
Lexeme 1 miðja
Lexeme 2 miðvikudagur
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference Buck 2008: 1006
Comment
NEW Realization 7
Type Polysemy
Language Old Church Slavonic
Lexeme срѣда
Meaning 1 middle, center
Direction
Meaning 2 Wednesday
Reference Cejtlin et al. 1994: 621-622
Comment Borrowed to Russian среда (sreda), Serbo-Croatian среда / sreda, сриједа / srijeda, Bulgarian сряда (srjada)
NEW Realization 8
Type Derivation
Language 1 Old East Slavic
Language 2 Slovak
Lexeme 1 sьrdь
Lexeme 2 Streda
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference <personally collected data>
Comment

Proto Slavic 
streda - Wiktionary

NEW Realization 9
Type Derivation
Language Polish
Lexeme 1 środek
Lexeme 2 sroda
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference Buck 2008: 1007
Comment

not sure in this realization

NEW Realization 10
Type Derivation
Language Russian
Lexeme 1 середина
Lexeme 2 среда
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference Buck 2008: 1006
Comment
NEW Realization 11
Type Derivation
Language Serbian
Lexeme 1 средњи
Lexeme 2 среда
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference <personally collected data>
Comment
NEW Realization 12
Type Derivation
Language Serbo-Croatian
Lexeme 1 sredina
Lexeme 2 srijeda
Meaning 1 middle
Direction
Meaning 2 Wednesday
Reference Buck 2008: 1007
Comment