There are many terms. Most formal would be "Vecamate" or "Vecmamina", however "ome", "vecmamma" or "vecamamma" are typicaly used in conversations.
Here's an audio recording for Grandmother in Latvian, Vecmāte (Vec-mā-te):
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The word for grandma in Russian is "бабушка" (babushka).
Babushka. Babushka is the Russian pronunciation for "Grandma" Deduska is for Grandpa...
Formal: Bab-oo-shka Pet word (what small children and close relatives use): Baba.
Привет бабушка
Back in the U.S.S.R. The name derives from the Russian word for ( Grandmother) and is also a type of headgear.
Formal: Bab-oo-shka Pet word (what small children and close relatives use): Baba.
The check word for grandma is "nana."
The Haitian Creole word for grandma is "grann".
The Malayalam word for grandma is "ammachi."
The Telugu word for grandma is "నాన్న" (nanna).
Ba-boosh-ka (бабушка).
Grandma or Gran