noun a gradual decline or decrease
preposition indicating the location or position of something
Within environmental science, 'on the wane' could be used to describe a reduction in the impact of a specific environmental issue or a decline in the health of a particular ecosystem.
In healthcare, 'on the wane' may be used to describe a decrease in the prevalence of a particular disease or health condition.
The term 'on the wane' is often used in economics to describe a decline or decrease in a particular economic indicator or trend.
In the field of demographics, 'on the wane' can be used to indicate a decrease in population growth or a decline in a specific demographic group.
In the world of literature, the popularity of a certain genre may be on the wane as readers' preferences shift towards other styles of writing.
The use of a particular therapeutic technique may be on the wane in psychology as newer, more effective methods are developed and adopted.
Certain economic theories or practices may be on the wane as new data and research suggest alternative approaches to addressing economic issues.
Traditional architectural styles may be on the wane as modern designs and sustainable practices become more popular among clients and builders.