Definition of Root louse. Meaning of Root louse. Synonyms of Root louse
Here you will find one or more explanations in English for the word Root louse.
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Definition of Root louse
Root louse 2. An edible or esculent root, especially of such plants as
produce a single root, as the beet, carrot, etc.; as, the
3. That which resembles a root in position or function, esp.
as a source of nourishment or support; that from which
anything proceeds as if by growth or development; as, the
root of a tooth, a nail, a cancer, and the like.
(a) An ancestor or progenitor; and hence, an early race; a
They were the roots out of which sprang two
distinct people. --Locke.
(b) A primitive form of speech; one of the earliest terms
employed in language; a word from which other words
are formed; a radix, or radical.
(c) The cause or occasion by which anything is brought
about; the source. ``She herself . . . is root of
The love of money is a root of all kinds of
evil. --1 Tim. vi.
10 (rev. Ver.)
(d) (Math.) That factor of a quantity which when
multiplied into itself will produce that quantity;
thus, 3 is a root of 9, because 3 multiplied into
itself produces 9; 3 is the cube root of 27.
(e) (Mus.) The fundamental tone of any chord; the tone
from whose harmonics, or overtones, a chord is
(f) The lowest place, position, or part. ``Deep to the
roots of hell.' --Milton. ``The roots of the
4. (Astrol.) The time which to reckon in making calculations.
When a root is of a birth yknowe [known]. --Chaucer.
A["e]rial roots. (Bot.)
(a) Small roots emitted from the stem of a plant in the
open air, which, attaching themselves to the bark of
trees, etc., serve to support the plant.
(b) Large roots growing from the stem, etc., which descend
and establish themselves in the soil. See Illust. of
Multiple primary root (Bot.), a name given to the numerous
roots emitted from the radicle in many plants, as the
Primary root (Bot.), the central, first-formed, main root,
from which the rootlets are given off.
Root and branch, every part; wholly; completely; as, to
destroy an error root and branch.
Root-and-branch men, radical reformers; -- a designation
applied to the English Independents (1641). See Citation
under Radical, n., 2.
Root barnacle (Zo["o]l.), one of the Rhizocephala.
Root hair (Bot.), one of the slender, hairlike fibers found
on the surface of fresh roots. They are prolongations of
the superficial cells of the root into minute tubes.
Root leaf (Bot.), a radical leaf. See Radical, a., 3
Root louse (Zo["o]l.), any plant louse, or aphid, which
lives on the roots of plants, as the Phylloxera of the
grapevine. See Phylloxera.
Root of an equation (Alg.), that value which, substituted
for the unknown quantity in an equation, satisfies the
Root of a nail
(Anat.), the part of a nail which is covered by the skin.
Root of a tooth (Anat.), the part of a tooth contained in
the socket and consisting of one or more fangs.
Secondary roots (Bot.), roots emitted from any part of the
plant above the radicle.
To strike root, To take root, to send forth roots; to
become fixed in the earth, etc., by a root; hence, in
general, to become planted, fixed, or established; to
increase and spread; as, an opinion takes root. ``The
bended twigs take root.' --Milton.
Meaning of Root louse from wikipedia
- rootstock, a common practice
due to their resistance
to phylloxera, a root louse
that eventually kills
the vine. In the late 19th century, most of Europe's...
in 1920. Furthering
was an infestation
of the phylloxera root louse which killed
many of the vines through
the valley. These
- it the Debret Vineyard
a stone winery
in 1886. Phylloxera
) at the end of the 19th century ended those vineyards
and the stone
- to the inability
to control black
rot and the destructive
aphid-like root louse called
phylloxera. In the early
1900s, Charlottesville's Monticello
for his part in saving
from the phylloxera root louse
pest. Hermann Jaeger
was born on March
23, 1844, in Brugg, Switzerland...
- industry received
a stern challenge
from nature, when the Phylloxera root louse
in Oregon. This necessitated
the use of Phylloxera-resistant...
- to Botanical Gardens
in England. These cuttings carried
of root louse called phylloxera which attacks
on the vine roots
(individual human) fish (noun) bird dog louse
tree (not log) seed (noun) leaf (botanics) root
(botanics) bark (of tree) skin (1952: person’s)...
planting, while plants neighboring infested plants showed increased root growth
at the expense
of the extension
parts. The wild potato,...
Davis, 1908 c g b Aphis forbesi
Weed, 1889 c g b (strawberry root louse
) Aphis frangulae
Kaltenbach, 1845 c g Aphis franzi
Holman, 1975 c g Aphis...
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