• WordNet 3.6
    • n interpenetration mutual penetration; diffusion of each through the other
    • n interpenetration the action of penetrating between or among
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Webster's Revised Unabridged Dictionary
    • n Interpenetration The act or process of penetrating between or within other substances; mutual penetration; also, the result of a process of interpenetration.
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Century Dictionary and Cyclopedia
    • n interpenetration The act of interpenetrating; reciprocal or mutual penetration; the occupation of the same space by the parts of two bodies.
    • n interpenetration In late medieval arch., from the end of the fifteenth century, the system of continuing moldings which meet each other independently past, the intersection, and generally of considering the identity of various architectural members as preserved after one has come to coincide partly with another or to be swallowed up in it, so that, for instance, the angles and edges of a square member which has become united with a member having a curved surface are shown on the curved surface as if projecting through it. Interpenetration is characteristic of the so-called continuous impost. (See impost.) It is inartistic, and contrary to sound architectural principles, as purporting to represent a false method of construction.
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In literature:

Interpenetrating Faceny's world of Nature, therefore, we have Amfuse's world of Love, or Relation.
"A Voyage to Arcturus" by David Lindsay
Is it to be total interpenetration of the two or partial conjunction?
"The Vedanta-Sutras with the Commentary by Sankaracarya"
Christ, the Spirit of Christ, interpenetrating ours, sweetens, purifies, transforms all.
"The Greatest Thing In the World and Other Addresses" by Henry Drummond
Human history reveals itself as a bewildering series of interpenetrations.
"Anthropology" by Robert Marett
There, as here (he feels), there must be interpenetration of spirit by spirit.
"Nature Mysticism" by J. Edward Mercer
But those departments over-lap and interpenetrate each other.
"Platform Monologues" by T. G. Tucker
There will always be a temper impatient of the past, eager for unity, anxious for something big and interpenetrating.
"Modern Religious Cults and Movements" by Gaius Glenn Atkins
Its form is peculiar; on plan, that of two circles interpenetrating.
"Bell's Cathedrals: The Cathedral Church of Norwich" by C. H. B. Quennell
Apart from this incident, "Absalom's Hair" is so interpenetrated with a sense of reality that we seem to live the story rather than read it.
"Essays on Scandinavian Literature" by Hjalmar Hjorth Boyesen
They interpenetrate and a change in one affects all the others.
"A Preface to Politics" by Walter Lippmann
"Human Traits and their Social Significance" by Irwin Edman
Ideally considered, they are in closest interpenetration.
"The Life Radiant" by Lilian Whiting
This immaterial world evidently interpenetrates, and may interfere with things in the material world as we know it.
"The Popes and Science" by James J. Walsh
Could it interpenetrate matter?
"Victor Ollnee's Discipline" by Hamlin Garland
The moral and the religious life interpenetrate each other.
"Means and Ends of Education" by J. L. Spalding
But this mutual interpenetration of the religious and moral ideas is still quite rudimentary.
"Lectures on the Origin and Growth of Religion as Illustrated by the Native Religions of Mexico and Peru" by Albert Réville
The interpenetration in our democratic society is too thorough.
"The Color Line" by William Benjamin Smith
It crystallizes in the cubic system, the usual form being that of interpenetrating cubes twinned on an octahedral plane.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7" by Various
The arrangement is excellent, though the sections in some places interpenetrate.
"Renaissance in Italy: Italian Literature" by John Addington Symonds
Three distinct but interpenetrating problems were presented by the Aristotelian system.
"Renaissance in Italy: Italian Literature" by John Addington Symonds

In poetry:

Clear your coil of kinkings
Into perfect plaiting,
Locking loops and linkings
"Cats Cradle Song," by James Clerk Maxwell
Air, soil, water, fire—these are words;
I myself am a word with them—my qualities interpenetrate with
theirs—my name is nothing to them;
Though it were told in the three thousand languages, what would air,
soil, water, fire, know of my name?
"Carol Of Words" by Walt Whitman

In science:

The filling factor (1 − ρ/σ0 ) takes into account the fact that the particles cannot interpenetrate because of their finite size a.
Nonlinear mean field Fokker-Planck equations. Application to the chemotaxis of biological populations
Note that in both cases obstacles do not experience excluded volume interactions with respect to each other and can thus interpenetrate.
Anomalous subdiffusion due to obstacles : A critical survey
On the other hand, an ideal WZ structure consists of two interpenetrating hexagonal closed packed(HCP) sublattices, one of atom A, the other of atom B, displaced from each other by 3 8 c along the c-axis.
Relative stability of zincblende and wurtzite structure in CdX(X = S, Se, Te) series - A NMTO study
A further kind of distortion, that is possible in the hexagonal structure and forbidden in the cubic, is that the two interpenetrating sublattices are slightly displaced from each other so that an atom of one sublattice is no longer at the centroid of the other sublattice.
Relative stability of zincblende and wurtzite structure in CdX(X = S, Se, Te) series - A NMTO study
The former refers to the interpenetrating triangular sublattices A and B, while the latter refers to a pair of inequivalent Dirac cones K and K (cid:48) in the Brillouin zone.
Stabilizing topological phases in graphene via random adsorption
We consider a regular lattice of N sites, with Ising spins Si = ±1 at each site, that can be divided into two equivalent interpenetrating sublattices, A and B.
Metamagnets in uniform and random fields
The β ′ phase is made of interpenetrating cubic lattices as depicted in Fig.3.
From Ginzburg-Landau to Hilbert-Einstein via Yamabe
Electrons are accelerated by strong filamentation instabilities in the shocked interpenetrating plasmas and coincide spatially with the power-law–distributed current filamentary structures.
Gamma-Ray Bursts, Collisionless Shocks and Synthetic Spectra
When two nonmagnetized collisionless plasma populations interpenetrate, current channels are formed through a Weibel–like two–stream instability (Medvedev and Loeb 1999; Frederiksen et al. 2002; Nishikawa et al. 2003; Silva et al. 2003).
Gamma-Ray Bursts, Collisionless Shocks and Synthetic Spectra
One of the consequences is the existence of two atoms per unit cell, that define two sublattices (A and B in the figure): indeed, the honeycomb lattice can be thought as two interpenetrating triangular lattices.
Modeling disorder in graphene
FIG. 1: Two-sub-lattice model: two sub-lattices labeled A and B interpenetrating each other.
Entanglement Entropy in Many-Fermion System
In the ordered state, the sublatticemagnetization vector on each sublattice (triangular layer consists of three interpenetrating triangular sublattices) cant with each other making an angle equal to 120◦ .
Universality of phase transitions of frustrated antiferromagnets
At SPS energies, there is still considerable stopping of the interpenetrating nuclei, resulting in a net baryon density in the central rapidity region.
Model for dilepton rates from a fireball
An analysis of experimental data carried out in Ref. has shown that the quasi-1D antiferromagnet C s2C oC l4 consists of two interpenetrating sublattices with identical intrasublattice interactions.
Quasi-one-dimensional anisotropic Heisenberg model in a transverse magnetic field
The number of coarse-grained monomers that lie within a range of interaction γ−1 ∼ √ga of any one monomers is comparable to the number of subchains that interpenetrate any subchain of length g .
Diagrammatic analysis of correlations in polymer fluids: Cluster diagrams via Edwards' field theory