To cause to blossom; to make something burst into flower or reach full beautiful development.
The prefix 'em-' combined with 'blossom,' following the same pattern as embloom. This variant shows how redundant em- verbs developed in English, with slight differences in poetic flavor.
Medieval poets used both 'emblossom' and 'embloom' to add lyrical richness to descriptions of spring and transformation—the extra syllable gave it a more flowery, romantic feel.
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