Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A crude form of sodium nitrate from South America; used as a fertilizer.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A layer of hard clay subsoil or sedimentary rock; hardpan.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: rock, stone
noun
crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: hardpan
Antonyms: none provided
Broader terms: soil, dirt
History
From Spanish caliche, from Latin calx (“pebble”); compare chalk.
