==Bulgarian==

===Pronunciation===
* {{bg-IPA|аба́к}}

===Noun===
{{bg-noun|аба́к|m}}

# {{lb|bg|architecture}} [[abacus]]

====Declension====
{{bg-ndecl|аба́к<>}}

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==Bulgarian==

===Pronunciation===
* {{bg-IPA|аба́к}}

===Noun===
{{head|bg|noun form|head=аба́к}}

# {{inflection of|bg|аба́к||indef|s}}

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==Kazakh==
{{kk-regional|абак|اباك}}
{{wikipedia|lang=kk}}

===Etymology===
Borrowed from {{bor|kk|ru|аба́к}}, from {{der|kk|fr|abaque}}, from {{der|kk|la|abacus}}; from {{der|kk|grc|ἄβαξ||board covered with sand}}.

===Pronunciation===
* {{IPA|kk|[ɐˈbak]}}

===Noun===
{{kk-noun}}

# [[abacus]]

====Declension====
{{kk-noun-c|а|қ}}

----

==Russian==

===Pronunciation===
* {{ru-IPA|аба́к}}
* {{audio|ru|Ru-{{PAGENAME}}.ogg|Audio}}

===Etymology 1===
Probably borrowed through {{der|ru|fr|abaque}}. See {{m|ru|абака}}.

====Alternative forms====
* {{l|ru|абака}} {{qualifier|uppermost member of column}}

====Noun====
{{ru-noun+|аба́к}}

# [[abacus]] {{gloss|board for doing calculations}}
# [[abacus]] {{gloss|uppermost member of a column}}

=====Declension=====
{{ru-noun-table|аба́к}}

=====Synonyms=====
* {{sense|board}} {{l|ru|счёты}}, {{l|ru|счётная доска́}}
* {{sense|member of column}} {{l|ru|аба́ка}}, {{l|ru|плита́}}

=====Descendants=====
* {{desc|kk|абак|bor=1}}

=====Further reading=====
* {{R:ru:BTS}}

===Etymology 2===

====Noun====
{{ru-noun form|аба́к|f-in-p}}

# {{inflection of|ru|аба́ка||gen|p}}

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==Serbo-Croatian==

===Alternative forms===
* {{l|sh|sc=Cyrl|а̀бакус}}

===Pronunciation===
* {{IPA|sh|/ǎbak/}}
* {{hyphenation|sh|а|бак}}

===Noun===
{{sh-noun|g=m|head=а̀бак}}

# [[abacus]]

====Declension====
{{sh-decl-noun|sc=Cyrl
|абак|абаци
|абака|абака
|абаку|абацима
|абак|абаке
|абаче|абаци
|абаку|абацима
|абаком|абацима
}}

----

==Ukrainian==

===Pronunciation===
* {{uk-IPA|аба́к}}

===Noun===
{{uk-noun|аба́к<>}}

# {{lb|uk|architecture}} [[abacus]]

====Declension====
{{uk-ndecl|аба́к<>}}

===References===
* {{R:uk:SUM-11}}