Conception occurs when sperm fertilizes an egg found in the fallopian tube, creating a zygote that can eventually become an embryo. Conception — and ultimately, pregnancy — can involve a ... Learn the various meanings and uses of the word conception , from an idea or plan in your mind to the fertilization of an egg. See synonyms, examples, pronunciation, and word origin of conception . CONCEPTION definition : 1. an idea of what something or someone is like, or a basic understanding of a situation or a…. Learn more. Learn the meaning of conception as a noun, with examples of different uses and contexts. Conception can refer to the act or process of forming an idea, or the process of becoming pregnant.