ex·o·spore 
(ĕksō-spôr′)
(ĕksō-spôr′)n.
1. The outermost layer of the wall of certain spores.
2. An asexual spore developed externally by budding, as from a sporophore.
- intersection
- intersectionality
- intersession
- intersessional
- intersex
- intersexual
- intersexuality
- intersexually
- interspace
- interspatial
- interspecies
- interspecific
- intersperse
- interspersedly
- interspersion
- interstate
- interstellar
- interstellar medium
- interstice
- interstitial
- interstitially
- intertestamental
- intertextual
- intertextuality
- intertextually