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n. pl. nau·pli·i (-plē-ī′)
The free-swimming first stage of the larva of certain crustaceans, having an unsegmented body with three pairs of appendages and a single median eye.

[New Latin, from Nauplius, former genus of crustacean (later discovered to be a larval stage of other genera), from Latin nauplius, paper nautilus, from Greek nauplios, nautilus (probably the pearly nautilus of the Indian Ocean) : naus, nau-, ship; see nāu- in the Appendix of Indo-European roots + plein, to sail, float, swim (the animal being so called because it was thought to sail in its shell like a ship and use its arms as oars); see pleu- in the Appendix of Indo-European roots.]

nau′pli·al (-əl) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -plii (-plɪˌaɪ)
(Zoology) the larva of many crustaceans, having a rounded unsegmented body with three pairs of limbs
[C19: from Latin: type of shellfish, from Greek Nauplios, one of the sons of Poseidon]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈnɔ pli əs)

n., pl. -pli•i (-pliˌaɪ)
a larval form in many crustaceans, with three pairs of appendages and a single median eye.
[1830–40; < Latin: a kind of shellfish]
nau′pli•al, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
During the experimental period, no feed was added into the rearing tanks, and the experiment of nauplius culture lasted 36 h.
Nauplii of Balanus glandula Darwin, 1854 were collected from the mature egg lamellae of adults in 2016 and reared to the cyprid stage in the laboratory; nauplii were grown in 1000-mL beakers in ~14 [degrees]C filtered seawater at a density of 1 nauplius per 2 mL, and they were fed 1 x [10.sup.5] cells m[L.sup.-1] of the diatom Skeletonema costatum until metamorphosis to cyprids (Emlet and Sadro, 2006).
Finally, a sensitive method of Polymerase Chain Reaction for the early detection of EHP from Nauplius stage is developed.
The endoparasitic stages of monstrilloids are unique; after infection by an early planktonic nauplius, successive nauplioid stages feed on their own vitellum while developing feeding tubes to absorb nutrients from their hosts.
Seventy-five hatched nauplius larvae from each female were randomly collected using a pipette and divided into three groups of 25 larvae each.
The 48 h [LC.sub.50] values of diazinon reported in this study were in the range with the 48 h [LC.sub.50] values reported for nauplius of copepod Eodiaptomus (48 h [LC.sub.50] = 2.8 [micro]g x [L.sup.- 1]), Mesocyclops (48 h [LC.sub.50] = 2.9 [micro]g x [L.sup.-1]), and Thermocyclops (48 h [LC.sub.50] = 4.1 [micro]g x [L.sup.-1]) [24].
The shrimp's first larval stage is the nauplius stage during which the larvae starts to display appendage growth.
King Nauplius lit a beacon near here to lure onto the rocks the Greek fleet returning from the Trojan War--vengeance for the unjust execution of his son Palamedes.
9) indicates most likely loss of instars during the evolution, evidently due to the appearance of more mature embryonic nauplius larvae starting their ontogenetic development already in the egg.
Hayes, "Decapod crustaceans associating with the sea urchin Diadema antillarum in the Virgin Islands," Nauplius, vol.