What is the meaning of Km?

Symbol for kilometre , an SI unit of length equal to 10 metres .

ISO 639-1 language code for Khmer.

Abbreviation of kædemaske.

to complete

to total, to sum up to

Used in Old Egyptian; archaic by Middle Egyptian.

Used mostly since Middle Egyptian.

Archaic or greatly restricted in usage by Middle Egyptian. The perfect has mostly taken over the functions of the perfective, and the subjunctive and periphrastic prospective have mostly replaced the prospective.

Declines using third-person suffix pronouns instead of adjectival endings: masculine .f/.fj, feminine .s/.sj, dual .sn/.snj, plural .sn.

Only in the masculine singular.

Only in the masculine.

Only in the feminine.

perfective active participle of kmm: black

Archaic in Middle Egyptian when modifying a noun.

From Middle Egyptian, this feminine singular form was generally used for the plural.
In Late Egyptian, the masculine singular form was used with all nouns.

Source: wiktionary.org