Also found in: Medical, Wikipedia.


adj. Botany
Having a white, powdery covering or bloom.

[Latin pruīnōsus, frosty, from pruīna, hoarfrost; see preus- in Indo-European roots.]
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.


(ˈpruːɪˌnəʊs; -ˌnəʊz)
(Botany) botany coated with a powdery or waxy bloom
[C19: from Latin pruīnōsus frost-covered, from pruīna hoarfrost]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpru əˌnoʊs)

covered with a frostlike bloom or powdery secretion, as a plant surface.
[1820–30; < Latin pruīnōsus frosty =pruīn(a) frost (akin to freeze) + -ōsus -ose1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
Group 3 & 4: rats received Suaeda monoica and Suaeda pruinose before paracetamol induction.
11); scutellar dorsum moderate grey to light brownish grey pruinose when viewed from certain angles ...
Pileus 67-81 mm diam., at first plane to slightly umbonated at the disc, infundibuliform in mature specimens, then slightly depressed at disc, surface smooth to slightly pruinose, margin involute, nonstriate, rimose, yellowish brown (5D5) to greyish brown (6F3) at the center, dark brown (6F5) toward the margin.
Khaghaninia and Hosseini (2013) keyed out this species with characteristics as: mesonotum with distinct pale pruinose stripes which reach posterior margin of notum, interrupted in middle; posterior margin of sternite 4 with a rounded projection.
Basidiocarps resupinate, adnate, effused, up to 100 [micro]m thick in section; hymenial surface smooth, pruinose, grayish white when fresh, not changing much on drying; margins thinning, paler concolorous, to indeterminate.
Head yellow, silvery pruinose. Front at vertex 0.03 to 0.25 of head width.
19 (15).-- Elytra testaceous, surface never pruinose; Sclerotized support of aedeagus symmetrical, curved downward and widely bifurcate apically 20 19'.-- Elytra rufobrunneous to rufopiceous, usually at least slightly pruinose, especially on elytra; sclerotized support of aedeagus asymmetrical, with form variable 21 20.-- Elytral disc with many erect, short setae; sternites II-IV concave or furrowed; phallobase lacking keels 20a 20'.-- Elytral disc lacking short setae; sternites II-IV convex medially; phallobase with strong convergent keels (Fig.
Oligopogon species tend to be heavily pruinose and the extent and distribution of apruinose areas provide useful characters in separating species.