• Webster's Revised Unabridged Dictionary
    • Underlayer (Mining) A perpendicular shaft sunk to cut the lode at any required depth.
    • Underlayer One who, or that which, underlays or is underlaid; a lower layer.
    • ***
Century Dictionary and Cyclopedia
    • n underlayer One who underlays.
    • ***
Chambers's Twentieth Century Dictionary
    • n Underlayer one who underlays
    • ***


In literature:

A still more treacherous motive underlay the Iroquois' peace.
"Canada: the Empire of the North" by Agnes C. Laut
It is worth while trying to understand what truth underlay those parts of his teaching which seem most repulsive.
"Historical and Political Essays" by William Edward Hartpole Lecky
A firm philosophical assumption underlay all these recommendations.
"Integration of the Armed Forces, 1940-1965" by Morris J. MacGregor Jr.
Some similar idea apparently underlay the omen of the dog running away with food.
"The Tribes and Castes of the Central Provinces of India - Volume IV of IV" by R.V. Russell
His eyes glittered at that, and a mercenary expression underlay the tone of his answer.
"Sense from Thought Divide" by Mark Irvin Clifton
The notion was that it underlay existing law and must be looked for through it.
"Ancient Law" by Sir Henry James Sumner Maine
Demonism was not unknown; in fact, it underlay much of the treatment.
"Three Thousand Years of Mental Healing" by George Barton Cutten
He felt sure that a fallacy underlay it somewhere, but he could not at the moment see what the fallacy was.
"General John Regan" by George A. Birmingham
Yet it would be difficult to speak too strongly of the great qualities which underlay the superficial defects.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3" by Various
Its monotonous tone underlay the twitter of the birds.
"Mary" by Bjornstjerne Bjornson

In news:

VOC-Free Underlayment from MP Global Products.
With the right underlayment, this rainscreen variant provides waterproofing, drainage, and a striking appearance.
The publication contains information about roof decks, underlayments, asphalt shingles , construction details, and attic ventilation.
Underlay tympanoplasty with laser tissue welding.
Abstract We investigated the feasibility of using laser tissue welding techniques to perform transcanal underlay tympanoplasty.
Dyckhoff has extended its range of Trevira Bioactive textiles to include reusable underlays for beds.
Deck Defense roof underlayment .
Fiberweb, the manufacturer of TYPAR weather-resistant barriers is introducing Surround SR Underlayment , a new, tear-resistant roofing underlayment that offers secondary protection against moisture intrusion.
USG LEVELROCK Floor Underlayment Chicago.
USG's LEVELROCK brand 4500 NXG floor underlayment is a high-performance, cementitious underlayment designed for interior use in a wide variety of commercial, institutional and rehab construction projects.
Mapei's Mapelastic Membrane is an Ideal Underlayment .
VOC -Free Underlayment from MP Global Products.
Norfolk, Neb.-based MP Global Products, a manufacturer of fiber acoustic underlayments, introduced VersaStick premium "green" pressure sensitive flooring adhesive .
DALTON, Ga.– Oriental Weavers USA is expanding its product roster to include area rug underlay.
Workers repairing a sewer pipeline for the Middlesex County Utilities Authority in New Jersey hand-applied Sauereisen's Underlayment No.

In science:

The first of these was what might be described as the autocentric principle, which underlay the pre Copernican dogma to the effect that as terrestrial observers we occupy a privileged position at the center of the universe.
Anthropic principle in cosmology
However, to account for the coupling between the large scale envelope and the small scale underlaying the stripe state, we consider η as free parameter and κ a finite number.
Transversal interface dynamics of a front connecting a stripe pattern to a uniform state
We re-examine closely the long held underlaying philosophy of the STR emanating from the Principle of Relativity via the twin paradox gedanken.
The Twin Paradox Revisited and Reformulated -- On the Possibility of Detecting Absolute Motion
The bes t result was obtained with Hamamatsu PMTs (R5912-MOD) manufactured with Pt-underlay. A light but sufficiently strong mechanical support was constructed to withstand the buoyant force (≈1kN) acting on the PMTs in liquid argon.
Search for WIMPs in liquid argon
The cell was read out by two Hamamatsu R6091-01MOD PMTs with Pt-underlay for cryogenic operation.
Search for WIMPs in liquid argon