0 someone who has guests: --
1 a person who introduces guests and performers, especially on television or radio: --
Our host for tonight's show is Jimmy Fallon.
2 a place or organization that provides the space and other necessary things for a special event: --
Japan is playing host to the next international conference.
3 a plant or animal that another plant or animal lives on as a parasite --
5 the holy bread that is eaten at Communion (= a Christian religious ceremony) --
It is hypothesized that the presence of these structures is a factor helping the parasite to grow in a variety of hosts and tissues.
However, specific interactions between schistosomes and their snail hosts start prior to penetration and development in the snail.
The precise expression of these changes was quite strongly influenced by the genotype of the host, presumably mediated through variation in levels of genetically-determined resistance.
It is possible that the first intermediate host is only infective during a specific season other than late summer/early autumn.
Perhaps the most important of these was the species of host.
Study of the effect of food on the biology of insects is important in understanding host suitability of plant-infesting insect species.
All observations and experiments, except those dealing with phenological synchronization with the host, were undertaken in the laboratory.
Consequently, just like adjuncts, parentheticals should be visible for certain syntactic operations in the host.
