noun, plural sem·i·month·lies.
Examples from the Web for semi-monthly
There is a regularly organized lottery in Havana, to which the government lends its name, and which has semi-monthly drawings.Due South or Cuba Past and Present|Maturin M. Ballou
It called for five steamships of not less than 1500 tons, and a semi-monthly service.Manual of Ship Subsidies|Edwin M. Bacon
The service is semi-monthly, divided between the two companies, and the broad Pacific is traversed in about twenty days.How to Travel|Thomas W. Knox
We have a paper called The Young Naturalist, which is published semi-monthly.
The whole work will be concluded in twenty semi-monthly numbers, or within six months from the present time.