V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.
Entry संक्रमणम्
संक्रमणम्saṃkramaṇam1 Concurrence.
1 Concurrence.
Transition, progress, passing from one point to another.
Passage.
The sun's passage from one zodiacal sign to another.
The day on which the summer solstice begins.
Decease, death; यदि दुःखमकृत्वा तु मम संक्रमणं भवेत् Rām. 2.13.12.