Of fire; hence, in gen., fire , glow , heat (orig. in relation to its flashing up; while fervor denotes a glowing, ardor a burning, and calor .

http://lila-erc.eu/data/lexicalResources/LewisShort/id/LexicalSense/n1404.2 an entity of type: LexicalSense

Of fire; hence, in gen., fire , glow , heat (orig. in relation to its flashing up; while fervor denotes a glowing, ardor a burning, and calor . 
Of fire; hence, in gen., fire , glow , heat (orig. in relation to its flashing up; while fervor denotes a glowing, ardor a burning, and calor . 

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