| Library / English Dictionary |
BOUNDARY
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The greatest possible degree of something
Example:
to the limit of his ability
Synonyms:
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("boundary" is a kind of...):
extent (the distance or area or volume over which something extends)
Hyponyms (each of the following is a kind of "boundary"):
knife-edge (a narrow boundary)
absoluteness; starkness; utterness (the quality of being complete or utter or extreme)
heat barrier; thermal barrier (a limit to high speed flight imposed by aerodynamic heating)
level best; maximum; utmost; uttermost (the greatest possible degree)
brink; verge (the limit beyond which something happens or changes)
Sense 2
Meaning:
The line or plane indicating the limit or extent of something
Synonyms:
bound; boundary; bounds
Classified under:
Nouns denoting spatial position
Hypernyms ("boundary" is a kind of...):
extremity (the outermost or farthest region or point)
Hyponyms (each of the following is a kind of "boundary"):
shoreline (a boundary line between land and water)
surface (the extended two-dimensional outer boundary of a three-dimensional object)
lineation; outline (the line that appears to bound an object)
demarcation; demarcation line; limit (the boundary of a specific area)
end (a boundary marking the extremities of something)
border; edge (the boundary of a surface)
city line (the boundary of a city)
county line (the boundary between two counties)
district line (the boundary between two districts)
bourn; bourne (an archaic term for a boundary)
border; borderline; boundary line; delimitation; mete (a line that indicates a boundary)
heliopause (the boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet)
frontier (an international boundary or the area (often fortified) immediately inside the boundary)
hairline (the natural margin formed by hair on the head)
Instance hyponyms:
Rubicon (the boundary in ancient times between Italy and Gaul; Caesar's crossing it with his army in 49 BC was an act of war)
Moho; Mohorovicic discontinuity (the boundary between the Earth's crust and the underlying mantle)
Derivation:
bound (form the boundary of; be contiguous to)
Sense 3
Meaning:
A line determining the limits of an area
Synonyms:
bound; boundary; edge
Classified under:
Nouns denoting two and three dimensional shapes
Hypernyms ("boundary" is a kind of...):
line (a length (straight or curved) without breadth or thickness; the trace of a moving point)
Hyponyms (each of the following is a kind of "boundary"):
rim (the shape of a raised edge of a more or less circular object)
border; margin; perimeter (the boundary line or the area immediately inside the boundary)
fringe; outer boundary; periphery (the outside boundary or surface of something)
brink; threshold; verge (a region marking a boundary)
upper bound ((mathematics) a number equal to or greater than any other number in a given set)
lower bound ((mathematics) a number equal to or less than any other number in a given set)
thalweg (the middle of the chief navigable channel of a waterway that forms the boundary line between states)
Derivation:
bound (form the boundary of; be contiguous to)
Context examples:
A boundary line or the area immediately inside the boundary.
(Border, NCI Thesaurus)
The palings of Rosings Park was their boundary on one side.
(Pride and Prejudice, by Jane Austen)
A description of the boundary configuration of a sample.
(Border Shape, NCI Thesaurus)
Characteristic of the clarity of the boundary or edges of a finding or feature.
(Border Definition, NCI Thesaurus/DICOM)
This soluble, nuclear protein may play a role in repression of transcription by RNA polymerase II, and formation of epigenetic boundary elements in chromatin.
(Histone-Lysine N-Methyltransferase SETD8, NCI Thesaurus)
It is elevated and does not extend beyond the original boundaries of the wound; the elevation may stabilize or regress spontaneously.
(Hypertrophic Scar, NCI Thesaurus)
On or near an edge or constituting an outer boundary; the outer area.
(Peripheral, NCI Thesaurus)
A long deep groove with an internal and external portion in the cerebral cortex creating a boundary between the parietal lobe and cuneus.
(Parieto-Occipital Fissure, NCI Thesaurus)
The poor victim, who on the morrow was to pass the awful boundary between life and death, felt not, as I did, such deep and bitter agony.
(Frankenstein, by Mary Wollstonecraft Shelley)
These programs span all areas of health and disease research and boundaries of the National Institutes of Health (NIH) Institutes and Centers (ICs).
(NIH Roadmap for Medical Research, NCI Thesaurus)
