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n. pl. col·lu·vi·ums or col·lu·vi·a (-vē-ə)
A loose deposit of rock debris accumulated through the action of gravity at the base of a cliff or slope.

[Latin, a collection of washings, dregs, from colluere, to wash thoroughly : com-, intensive pref.; see com- + -luere, to wash; see leu(ə)- in Indo-European roots.]

col·lu′vi·al adj.


n, pl -via (-vɪə) or -viums
(Geological Science) a mixture of rock fragments from the bases of cliffs
[Latin: collection of filth, from colluere to wash thoroughly, from com- (intensive) + luere to wash]
colˈluvial adj


(kəˈlu vi əm)

n., pl. -vi•a (-vi ə) -vi•ums.
loose earth material that has accumulated at the base of a slope; talus.
[1935–40; < Latin colluv-, base of colluere to rinse, wash out <lavere to wash; compare alluvium, deluge]
col•lu′vi•al, adj.
References in periodicals archive ?
Colluvia Syrah - right - from Chile's highly respected De Martino outfit is pounds 6.
This is in agreement with the alternation of pedogenic substrates: horizon Ck corresponds to loess, IICk corresponds to marl colluvia and IIICk corresponds to loess.
Synecology and structure: it is a mantle formation with thorny shrubs, frequent in the impluvia and the colluvia, mainly north-facing, and on the bottom of the alluvial valley.