concentration-n; 6 Senses

Sense Number 1: relative strength of a chemical substance

Commentary: CONCENTRATION[+quantity][+degree][+strength][+relative][+chemical]

Examples:
The chemical is harmless in such small concentrations.
The fumes can collect into a potentially explosive concentration below decks.
That narcotic can be lethal in those concentrations.

Mappings:
WordNet 3.0 Sense Numbers: 1

Sense Number 2: degree of spatial crowding together, density

Commentary: CONCENTRATION[+quantity][+density][+spatial][+occupancy]

Examples:
That lake supports the largest concentration of Canada geese in the world.
Most of the population lives in urban concentrations along the border.
Bob's father survived a concentration camp during World War II.
They hope the concentration of troops around the capital will reduce the current violence.

Mappings:
WordNet 3.0 Sense Numbers: 2, 4, 6

Sense Number 3: the act of increasing or strengthening a solution

Commentary: CONCENTRATION[+activity][+increasing][+strength][+relative][+substance]

Examples:
The concentration of grain alcohol occurs through a distillation process.
Those labs are used for the concentration of uranium 235 isotopes for weapons-grade fissile material.

Mappings:
WordNet 3.0 Sense Numbers: 3

Sense Number 4: a mental state of immersion, engrossment

Commentary: CONCENTRATION[+state][+mental][+immersion]
NOTE: implies a single event of mental immersion

Examples:
There was a look of complete concentration on the pianist's face as he began the piece.
Immense concentration is required of simultaneous translators.
The ringing telephone and barking dog broke my concentration.

Mappings:
WordNet 3.0 Sense Numbers: 5

Sense Number 5: the act of directing attention, resources to something

Commentary: CONCENTRATION[+activity][+allocation][+large][+attention/+resources]
NOTE: implies an ongoing allocation of attention or resources

Examples:
The school's concentration on the learning disabled has resulted in a neglect of the gifted students.
The concentration of effort in combatting this disease has been through educational channels.
John's area of concentration as a math major is topology.

Mappings:
WordNet 3.0 Sense Numbers: 7

Sense Number 6: none of the above

Commentary: Automatically generated NOTA sense (bbn)

Examples:

Mappings: