Glossary

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Term Definition
Nanoemulsion

Latin ex and mulgēre - milked out (milk is a well-known emulsion). Finely distributed mixture of two normally immiscible liquids (e.g. water and oil) with no visible segregation. If the droplets are nanoscale, this is called a nanoemulsion.

Nanofertilisers

Is the transformed formulation of conventional fertilizer using nanotechnology. Nanoscale or nanostructured materials act as fertilizer carriers to enable controlled-release, enhanced solubility and enhanced nutrient use efficiency. In contrast to the convential fertilizer the soil impact is believed to be reduced by nano based fertilisers. One representative already in use is nitrogen containing zeolite.

Nanofibre

Nano-object with two similar external dimensions in the nanoscale and a third significantly larger.
See also ISO/TS 80004-2:2015, International Organization for Standardization

Nanogel

Made of natural or synthetic polymers with a diameter of 10-100 nanometers. The gel forms pores that can be loaded with small molecules (e.g. pesticides).

Nanomaterial

On 18 October 2011 the EU Commission adopted the recommendation on the definition of a nanomaterial.
According to this recommendation a "nanomaterial" means: A natural, incidental or manufactured material containing particles, in an unbound state or as an aggregate or as an agglomerate and where, for 50% or more of the particles in the number size distribution, one or more external dimensions is in the size range 1 nm - 100 nm. In specific cases and where warranted by concerns for the environment, health, safety or competitiveness the number size distribution threshold of 50% may be replaced by a threshold between 1 and 50%. By derogation from the above, fullerenes, graphene flakes and single wall carbon nanotubes with one or more external dimensions below 1 nm should be considered as nanomaterials.

Nanometer

The term "nano" is derived from the Greek word nanos, dwarf. Abbreviation nm. A nm is one millionth of a millimeter or 1/1.000,000,000 (1/1 billion) of a meter.

Nanoobject

Material with one, two or three external dimensions in the nanoscale. This is a generic term for all nanoscale objects.
See also ISO/TS 27687:2008 (E), International Organization for Standardization

Nanoparticle

Nano-object with all three external dimensions in the nanoscale.
See also ISO/TS 27687:2008 (E), International Organization for Standardization

Nanoplate

Nano-object with one external dimension in the nanoscale and two other external dimensions significantly larger.
See also ISO/TS 27687:2008 (E), International Organization for Standardization

Nanoscale

Or nano-scale, size range from approximately 1 nm to 100 nm.

nanowaste

separately collected or collectable waste materials which are or contain engineered nanomaterials.

Natural organic matter

A group of compounds derived from the decay of dead plants and animals. Natural organic matter is present throughout the ecosystem.

Necrosis

Greek nékrosis - dead. Unplanned cell death, such as through injury. In this case, the cell contents are released, which damage the environment and cause inflammation. Necrosis always means danger for the body.

NO(A)EL

Short for no observed (adverse) effect level.

NOEC

Short for no observed effect concentration.

 

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