root(1) (iou) and heater (oh)

root noun1 & adjective. [ru:t] LOE.
[Old Norse rot from Scandinavian base obscurely rel. to Latin radix root, ramus branch, and WORT noun1.]
A. noun.
I.
The colourless, usu. underground, part of a vascular plant (developed from the radicle) which serves to anchor it, convey nourishment, etc.; in pl., such an organ with any accompanying branches, rootlets, or fibres. LOE.
adventitious root, aerial root, tap root, tuberous root, etc.
W. Cather The..trees of the desert, whose roots are always seeking water.
The underground part of a plant used as Food or in medicine. Now chiefly, this part when fleshy and enlarged, used as a vegetable; a plant grown for its fleshy edible underground part. LOE.
Farmer's Magazine Very few turnips..this season; this root having generally failed.
b. The penis. coarse slang. L16.
The permanent underground stock of a plant from which the stems or leaves are produced. Also (now rare), a (growing) plant. ME.
J. Abercrombie The propagation of bulbous and tuberous roots for General supply.
Anatomy. The embedded or basal part of a bodily organ or structure, such as a hair, the tongue, a tooth, a nail, etc. ME.
J. Bingham Her dyed fair hair, the brown showing at the roots on the scalp.
b. Either of two short paired nerves which arise from the spinal cord and unite to form each spinal nerve. L19.
The bottom or base of something material; esp. the foot of a hill (usu. in pl.). ME.
N. Calder Eclogite, a material found..in the roots of mountains.
b. The bottom of the groove of a screw thread. L19.
a. That part of anything by or at which it is attached to something else. M17.
b. The opaque base of a precious stone, esp. an emerald. L17.
II.
The source or origin of or of some quality, condition, action, etc. ME.
Shelley The root of all this ill is prelacy. J. Klein Our need for others has its roots in our earliest experiences.
A person or family forming the source of a lineage. ME.
b. A scion, an offshoot. Chiefly in biblical use. ME.
The basis or means of continuance or growth of a thing. ME.
A. Alison This prodigious change..laid the axe to the root of the aristocracy.
The bottom or real basis of a thing; the inner or essential part. Formerly also spec., the bottom of the heart. ME.
F. W. Robertson The root of the matter has not been reached. E. Blishen She had been at the root of so much pain and enmity.
a. A hold on a person's affections or favour. E-M18.
b. In pl. Social, cultural, or ethnic origins, esp. as the reasons for a person's long-standing emotional attachment to a place. E20.
L. R. Banks The things that stopped him; the claims of his business, his wife, his kids, his roots. C. Potok He wandered from city to city, never finding roots anywhere.
III.
Astrology. = RADIX 2. Long rare or obsolete. LME.
Math.
a. A number which, when multiplied by itself a requisite number of times, produces a given expression. LME.
b. A value of an unknown quantity which will satisfy a given equation. E18.
c. A unique node or vertex of a graph from which every Other node can be reached. Also root node. M19.
Linguistics. An ultimate unanalysable element of language; a (not necessarily surviving) morphological element as a base from which words are formed by means of affixation or Other modification. M16.
Music. The fundamental note of a chord. E19.
A forceful kick. slang. E20.
An act of sexual intercourse; a (usu. female) sexual partner. Austral. coarse slang. M20.
Phrases: cube root: see CUBE adjective 1. digital root the digit obtained when all the digits of a number are added and the process repeated until the result is a single digit. motor root: see MOTOR noun & adjective. on its own roots, on own roots (of a plant) having its tissues all developed from the same embryo, not grafted or budded. pull up by the roots (a) uproot; (b) eradicate, destroy. put down roots (a) begin to draw nourishment from the soil; (b) fig. become settled or established. root and branch adjectival & adverbial phr. thorough(ly), radical(ly). root of SCARCITY, SCARCITY root. serpentary root: see SERPENTARY 2. strike at the root of, strike at the roots of set about destroying. take root, strike root (a) begin to grow and draw nourishment from the soil; (b) fig. become fixed or established, settle down in a place etc. third root cube root.
Comb.: root-aorist Philology in certain Indo-European Languages, an aorist formed by adding personal endings directly to the root-syllable of the verb; root-ball the mass formed by the roots of a plant and the soil surrounding them; root-balled adjective (of a plant, esp. a tree) having the root-ball wrapped in sacking etc. for protection during transportation etc.; root beer N. Amer. an effervescent drink made from an extract of roots; root-bound adjective (of a plant) pot-bound; root canal the pulp-filled cavity within the root of a tooth; root-cap Botany = CALYPTRA (a); root cellar N. Amer.: a cellar in a house for storing root Vegetables etc. root-climber a plant which climbs by means of rootlets developed on the stem; root crop: consisting of a vegetable with an edible root, as beet, carrot, potato, etc.; root cutting: taken from the root of a plant; root digger (a) a tool for digging up edible roots; (b) a member of a N. American Indian people who subsisted chiefly on roots (cf. DIGGER 1d); root directory Computing the directory at the highest level of a hierarchy; root doctor US dial.: who treats ailments using roots; root-fallen adjective (of a grain-crop) fallen due to frost-damaged roots; root fly any of numerous dark slender flies of the family Anthomyiidae whose larvae can cause serious damage to the roots of crops; root gall a gall on the root of a plant caused by an insect, nematode, etc.; root ginger: in its raw unprepared state; root-graft noun & verb (a) noun a graft of a scion on to a root; a naturally occurring graft between the roots of neighbouring trees; (b) verb trans. graft by means of a root-graft; root-hair Botany any of the unicellular outgrowths from the outer layer of cells of a root, whose function is to absorb moisture from the soil; root-house (a) an ornamental building made chiefly of tree-roots, esp. in a Garden; (b) a house or barn for storing roots; root-knot a plant disease caused by infestation of the roots by nematodes of the genus Meloidogyne, producing characteristic swellings; root-leaf a radical leaf; root-mean-square Physics the square root of the mean of the squares of a set of values; abbreviation rms; root node: see sense 13c above; root nodule: see NODULE 4; root position Music: of a chord whose lowest note is the root (sense 15); root pressure Botany the hydrostatic pressure generated in the roots of a plant, which helps the sap to rise in the xylem; root-prune verb trans. prune (a tree) by cutting its roots; root rot a plant disease that attacks roots; rootstock (a) Botany a rhizome; esp. a short erect rhizome or underground stem from which new leaves and shoots are produced annually; (b) a stock on to which another variety has been grafted or budded; (c) a primary form from which offshoots have arisen; a primitive form; root swell, root swelling an outgrowth of a tree above a root; root-weed: which propagates itself by roots rather than seeds; root-worm any of various nematodes that infest the roots of plants.
b. adjective. Of an idea etc.: from which another or others originated; fundamental. M17.
rootless adjective devoid of roots LME.
rootlessly adverb (fig.) E20.
rootlessness noun (fig.) M19.
rootlet noun (a) a slender root or division of a root; any of the secondary roots thrown out laterally for support by ivy and Other climbing plants; (b) Physiology (now rare) a slender branch, fibre, etc., of a structure, esp. a vein or nerve: L18.
rootlike adjective resembling (that of) a root M19.
rootling noun a rootlet, a subsidiary root E18.

heater (oh)

a machine for making air or water hotter
　Did you turn the heater off?

Sites

Pest Star