adjective

1. (context, of a pathogenic organism) Able to survive outside of its host

noun

1. The ectoplasm of an amoeba and similar protozoa

noun

1. The inner layer of a spore
2. A small vegetative spore produced by some bacteria

adjective

1. of, relating to, within, or by way of the intestines
2. staying intact in the stomach, then dissolving in the intestine

noun

1. (microbiology) (plural of, enterobacterium)

category:English plurals ending in "-a"

adjective

1. (context, of bacterial growth) rapid and luxuriant