гэканье

Etymology 1
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Noun

 * 1)  "hekanye", the non-standard pronunciation of letter,  as  or  and  or  in devoiced positions, instead of the standard  and  in devoiced positions as heard in Southern Russian (the European part, south from Voronezh), Ukrainian and Belarusian, also commonly by Russians or Russian speakers in Ukraine and Belarus.

Etymology 2
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Noun

 * 1)  "gekanye", the standard and common pronunciation of letter,  as  and  in devoiced positions. This is the feature of the standard Russian and the most common pronunciation in Northern and Central dialects and spread in most parts of Eastern Russian - Urals, Siberia and the Far East.

Usage notes

 * The letter, has different pronunciations in standard Russian versus Ukrainian, Belarusian and Southern Russian but there is no separate letter for the different sounds. To make the distinction clearer, usually words like "Ukrainian", "Southern", "Kuban", etc. are used to refer to the  or  sounds.
 * Loanwords with (hard) "g and "h" are often mixed up in Russian, Ukrainian and Belarusian, although the Cyrillic "г" is not always used to transliterate these letters. Ukrainian has letter to specifically transliterate foreign "g" but it's not very common.
 * There are some occurrences when and  (in devoiced positions) is not considered non-standard and is acceptable, at least as a variant.