Definition of orthocone in English:

orthocone

Line breaks: ortho|cone
Pronunciation: /ˈɔːθəkəʊn/

Entry from British & World English dictionary

noun

Palaeontology
1The straight shell typical of early nautiloid cephalopods.
1.1A fossil cephalopod with an orthocone shell.

Derivatives

orthoconic

adjective

Definition of orthocone in:

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Word of the day demoralize
Pronunciation: dəˈmôrəˌlīz
verb
cause (someone) to lose confidence or hope; dispirit