A pathogen: a pathogenic microorganism, such as a bacterium or virus.
The origin or earliest version of an idea or project.
The small mass of cells from which a part of an organism develops, or a macroscopic but immature form of that part; a bud.
The embryo of a seed, especially of a seed used as a cereal or grain. See Wikipedia article on cereal germ.
An equivalence class that includes a specified function defined in an open neighborhood.
To germinate.
To grow, as if parasitic.
A toxic or poisonous substance.
Capable of causing damage or dysfunction by toxicity; (broadly) poisonous.