ichthyaladj.
/ˈɪkθɪəl/ = ichthyic adj.
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piscine1670
ichthyological1716
piscatorya1777
finny1831
ichthyic1846
piscatorial1853
ichthyal1874
1874 W. C. Williamson in Owen's Coll. Ess. vii. 222 The Ichthyal division of that kingdom.
This entry has not yet been fully updated (first published 1899; most recently modified version published online March 2018).
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adj.1874