ascidian
Definition
Noun: 1. A type of marine animal: An ascidian is a small, non-moving sea creature. It has a soft, bag-like body. It feeds by drawing water in through one tube (siphon) and releasing it through another.
Usage
- As a subject:
- As an object:
- With modifiers:
Advanced Usage
- In scientific taxonomy, "ascidian" refers specifically to any member of the class Ascidiacea within the subphylum Tunicata (or Urochordata).
- The research focused on the developmental biology of the ascidian embryo.
Variants and Related Words
- Tunicate (n): Another, more general scientific name for ascidians and their relatives, referring to their tough outer "tunic."
- Sea squirts are a well-known type of tunicate.
Synonyms
- Sea squirt (n): A common name for many ascidians, derived from their habit of squirting water when disturbed.
Related Phrases / Terms
- Ascidian tadpole (n): The free-swimming larval stage of an ascidian, which has a primitive spinal cord, highlighting its relation to vertebrates.
- The ascidian tadpole undergoes metamorphosis to become a sedentary adult.
Noun
-
minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves
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