In a manner involving both letters and numbers; relating to the combined use of alphameric characters.
Alphamerical + -ly (the suffix that turns adjectives into adverbs). The -ly suffix comes from Old English -liche and is the primary way to form adverbs in English.
The -ly adverb ending is so common that English speakers instantly recognize it—when you see any word ending in -ly, your brain immediately expects an adverb, showing how powerful these suffixes are in helping us parse unfamiliar words.
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