Definition

1. Noun:
   • An animal organism in the early stages of growth and differentiation: This refers to the product of conception from the time of fertilization until it develops into a fetus. In higher life forms, this stage leads into fetal development, while in lower forms, it concludes when larval life begins.

Usage Examples

• Noun:
  • The ultrasound allowed us to observe the early conceptus.
  • Researchers are studying the implantation of the conceptus in the uterine wall.

Advanced Usage

• Scientific/Medical Context: The term is primarily used in formal, biological, embryological, and medical contexts to describe the developing organism before it is termed a fetus.
  • The study focused on genetic abnormalities in the conceptus during the first trimester.

Variants and Related Words

• Embryo (n): An early stage of development of a multicellular organism. In humans, this term is often used for the conceptus from implantation until about the 8th week.
• Zygote (n): The initial cell formed when a sperm cell fertilizes an egg cell; this is the earliest stage of the conceptus.
• Fetus (n): The later stage of prenatal development in viviparous animals, following the embryonic period.

Synonyms

• Embryo: The developing young of an animal in the early stages.
• Fertilized egg: The cell resulting from fertilization, beginning the stage of the conceptus.

Related Phrases

• "Implantation of the conceptus": The process by which the conceptus attaches to the lining of the uterus.
  • Successful pregnancy depends on the proper implantation of the conceptus.

Noun

1. an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life