The "Minimum Dimension" means the minimum dimension of an
organism based upon the dimensions of that organism's body, ignoring
e.g. the size of spines, flagellae, or antenna. The minimum dimension
should therefore be the smallest part of the "body", i.e. the smallest
dimension between main body surfaces of an individual when looked
at from all perspectives. For spherical shaped organisms, the minimum
dimension should be the spherical diameter. For colony forming species,
the individual should be measured as it is the smallest unit able
to reproduce that needs to be tested in viability tests. This should
be considered whenever size is discussed in this document.