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n. pl. pi·le·i (-lē-ī′)
1. Botany The umbrellalike fruiting structure forming the top of a stalked fleshy fungus, such as a mushroom; the cap.
2. A brimless round skullcap worn by ancient Romans.
3. See caul.

[New Latin pīleus, from Latin, cap.]
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.


(ˈpaɪlɪəs; ˈpɪl-)
n, pl -lei (-lɪˌaɪ)
(Botany) the upper cap-shaped part of a mushroom or similar spore-producing body
[C18 (botanical use): New Latin, from Latin: felt cap]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpaɪ li əs, ˈpɪl i-)

n., pl. pi•le•i (ˈpaɪ liˌaɪ, ˈpɪl iˌaɪ)
1. the horizontal portion of a mushroom, bearing gills, tubes, etc., on its underside; a cap.
2. the umbrella or bell of a jellyfish.
3. pileum.
4. a felt skullcap worn by the ancient Romans and Greeks.
[1750–60; < New Latin; Latin pīleus felt cap; akin to Greek pîlos felt, felt cap]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pileus - a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroompileus - a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
fungus - an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia
plant part, plant structure - any part of a plant or fungus
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
CAE as 1 176/1 169-158 PAE as 177/1 169-158 PT as 178/1 169-158 CINA as 179/1 169-158 BAL as 180/1 169-158 SAX as 181/1 169-158 pilei as 182/2 169-158 grifo, cabeza de as liebre 183/1 169-158 loba y gemelos as 184/1 169-158 mariposa y vid as 185/1 169-158 VARO as 1 186/1 169-158 MVRENA as 186/Av 169-158 MVR as 187/2 169-158 PVR as 188/1 169-158 OPEIMI as 188/2 169-158 OPEIMI semis 1 189/1 169-158 P.BLAS as 190/1 169-158 OPEI as 191/1 169-158 VAL as 1 193/1 169-158 TVRD as 194/1 169-158 ancla as 195/1 169-158 asno as 196/1 169-158 estrella as 198B/1a 157-156 anonimo i as delante de proa 198B/1b 157-156 anonimo i as 1 sobre proa 199/2 155 SAR as 200/2 155 NAT as 1 201/2 154 C.
Morphologically, a mushroom can be divided into two main parts: pilei (superior part of the fruit body where the lamella and spores are located) and stipe (inferior part of the fruit body, consisting of a bulk sterile hyphal tissue) [8, 9].
Preparation of single spore isolates (SSIs): Fresh and mature pilei were selected and detached with a sterile knife (Bao et al.
The observed amino acid pattern in this study may have been contributed by the differences in the growth substrate, size of the pilei and species or strain of mushroom among others [20].
eryngii yield (fresh mushroom weight), biological efficiency (BE, ratio of mushrooms fresh weight to dry substrate weight expressed as a percentage), pilei color (brightness), antioxidants (selenium and ergothioneine) concentration, solids and number of mushrooms.