From qatar; something to fume (incense) on i.e. A hearth place -- to burn...upon.
see HEBREW qatar
H4729. miqtar
[מִקְטָר מַקְטֵר,] noun masculine place of sacrificial smoke; — construct קְטֹדֶת מִקְטַר מִוְבֵּחַ Exodus 30:1 altar, place of offering incense (SS Kau Buhl13 and others noun active burning).