bn:00000242n
Noun Concept
EN
alphabet  ABC  ABC's  ABCs  first principle
EN
The elementary stages of any subject (usually plural) WordNet 3.0
Definitions
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Sources
EN
The elementary stages of any subject (usually plural) WordNet 3.0 & WordNet 2020
A complete standardized set of letters each of which roughly represents a phoneme of a spoken language. OmegaWiki
The fundamentals of any subject. Wiktionary
A writing system in which letters represent phonemes. (Contrast e.g. logography, a writing system in which each character represents a word, and syllabary, in which each character represents a syllable.). Wiktionary
A basic, foundational proposition or assumption that cannot be deduced from any other proposition or assumption. Wiktionary
EN
He mastered only the rudiments of geometry WordNet 3.0
The ABC of finance. Wiktionary