The Mycenaean language is preserved in Linear B writing, which consists of about 200 syllabic signs and logograms. Since Linear B was derived from Linear A, the script of an undeciphered Minoan language,

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Mycenaean preserves some archaic Proto-Indo-European and Proto-Greek features not present in later ancient Greek.
One archaic feature is the

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Nouns likely decline for 7 cases: nominative, genitive, accusative, dative, vocative, instrumental and locative; 3 genders: masculine, feminine, neuter; and 3 numbers: singular, dual, plural. The last two cases had merged with other cases by Classical Greek.

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While the Mycenaean dialect is relatively uniform at all the centres where it is found, there are also a few traces of dialectal variants:
• i for e in

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• Bakker, Egbert J., ed. 2010. A companion to the Ancient Greek language. Oxford: Wiley-Blackwell.
• Chadwick, John. 1958. The decipherment of Linear B. Cambridge, UK: Cambridge University Press.
• Christidis, Anastasios-Phoivos, ed. 2007. A History of Ancient Greek:

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Mycenaean had already undergone the following sound changes peculiar to the Greek language and so is considered to be Greek:
Phonological changes
• Initial and intervocalic *s to /h/.
• Voiced aspirates devoiced.

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