xeno-, xen-, -xenic, -xenism, -xenist, -xenous, -xeny

(Greek: foreign, foreigner; alien; different; extraneous; strange, stranger; and by extension, guest)

The "x" in xeno- is pronounced "z"; "zeno". Greeks are said to have considered any stranger a "guest" and modern Greek includes xenodocheion a "guest house" or "house for guests" or its modern version of "hotel".

The etymological meaning usually denotes some aspect of a relationship involving guests or visitors of some kind.

1. A parasite associated with many hosts during its life-cycle.
2. A parasite that is not host specific; also, pleioxeny.
The office or function of a proxenus; the system of proxeni or hospitality between cities in ancient Greece. A proxenus was a resident citizen of a Greek state who was appointed by another state to represent and protect its interests.
pyrotechnic signal
A signal designed for military use to produce a colored light or smoke, for the purpose of transmitting information.
rheoxenous, rheoxene
Used of organisms that occur only occasionally in running water.
1. Tolerating only a narrow range of host species.
2. Restricted to a narrow range of hosts: said of parasites that are limited to one or a few host species.
stygoxenous, stygoxene
In biology, organisms found only occasionally in caves or subterranean passages.
synxeny, synxenic
A mixture of two or more organisms cultivated under controlled conditions.
trixenous, trixeny
1. A reference to a parasite utilizing three host species during its life cycle.
2. A mixed culture of organisms, where one organism is associasted with three other species.
trogloxene (s) (noun), trogloxemes (pl)
1. A being found only occasionally in underground passages: Sam, the park naturalist, was charting the number of different trogloxenes who live from time to time in the caves, including hikers who get lost and sleep in them overnight.
2. A cavern guest; an animal that spends occasionally short periods in dark recesses: Hibernating bears are a common form of trogloxene, spending part of the winter season in large holes, or dens, in mountains or underground.
xenagogue, xenogogic
From Greek, to lead, leading; bring, take; plus a “guest” or stranger. A reference to someone who conducts strangers or foreigners; a tour guide.
The leading or conducting of strangers, and refers to the title of a guide-book for foreigners.

Related "foreign, strange" word families: allotrio-; barbar-.