
1) Become fixed or established 2) Become hard or harder 3) Callous 4) Emotionally hardened 5) Habituate 6) Insensitive 7) Make hard or harder 8) Pachydermatous 9) Thick-skinned 10) To harden or to grow hard 11) To inure 12) To make callous or unfeeling 13) To make hardy or robust 14) To strengthen
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https://www.crosswordclues.com/clue/indurate

1) Calcify 2) Callous 3) Harden 4) Inure
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https://www.crosswordclues.com/clue/indurate

hardened, often the hardening developed only at maturity
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http://florabase.dpaw.wa.gov.au/help/glossary

hardened and tough
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http://orchidfetish.com/glossary.html

to make hard, callous or unfeeling
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http://phrontistery.info/i.html

• (v. i.) To grow hard; to harden, or become hard; as, clay indurates by drying, and by heat. • (v. t.) To make unfeeling; to deprive of sensibility; to render obdurate. • (a.) Hardened; not soft; indurated. • (a.) Without sensibility; unfeeling; obdurate. • (v. t.) To make hard; as, extreme heat indurates clay; some fossil...
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http://thinkexist.com/dictionary/meaning/indurate/

hardened and/or stiffened
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http://www.calflora.net/botanicalnames/botanicalterms.html

hardened and/or stiffened
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http://www.encyclo.co.uk/local/21767

Hardened.
Found on
http://www.encyclo.co.uk/local/22034
In'du·rate adjective [ Latin
induratus , past participle of
indurare to harden. See
Endure .]
1. Hardened; not soft; indurated.
Tyndale. 2. Without sensibility; unfeeling; obdurate.
Found on
http://www.encyclo.co.uk/webster/I/48
In'du·rate intransitive verb To grow hard; to harden, or become hard; as, clay
indurates by drying, and by heat.
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http://www.encyclo.co.uk/webster/I/48
In'du·rate transitive verb [
imperfect & past participle Indurated ;
present participle & verbal noun Indurating .]
1. To make hard; as, extreme heat
indurates clay; some fossils are
indurated by exposure to the ai...
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http://www.encyclo.co.uk/webster/I/48

hardened and tough
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http://www.orchidspecies.com/glossary.htm

[
v] - become fixed or established, as of a custom
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http://www.webdictionary.co.uk/definition.php?query=indurate
No exact match found.