(no-toh-kord) [Gk. noto, back + L. chorda, cord] A longitudinal, flexible rod formed from dorsal mesoderm and located between the gut and the nerve cord in all chordate embryos.

1848, coined in English by English anatomist Sir Richard Owen (1804-1892) from chord + comb. form of Greek noton "back," from PIE *not- "buttock, back" (source also of Latin natis [..]

Characteristic of chordates, the notochord is a stiff rod of tissue along the back of the body. In vertebrates, the backbone is deposited around the notochord and nerve cord.

(no´tuo-kord) A flexible rod of tissue that extends the length of the back of an embryo. nucleolus

An elongated cellular cord, enclosed in a sheath, which forms the primitive axial skeleton of chordate embryos and adult cephalochordates. notopodium

A midline structure arising early in the embryonic development of vertebrates. See Figure 7.1.

(n) a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates

A rodlike cellular structure running the length of the organisms body which strengthens and supports the body in place of a vertebral column, and supports muscle attachment and bends to support a broa [..]

In embryology, a rod-shaped body of cells that is the center of development of the axis of the skeleton; also called chorda dorsalis.

A cartilaginous rod of mesodermal Cells at the dorsal midline of all Chordate Embryos. In lower Vertebrates, notochord is the backbone of support. In the higher Vertebrates, notochord is a transient s [..]

The rod-shaped body, composed of cells derived from the mesoblast and defining the primitive axis of the embryo. In lower vertebrates, it persists throughout life as the main axial support of the body [..]

flexible rodlike longitudinal structural element in primitive chordates nucleic acid

Rod-like primitive backbone. Found in Ascidians.

A flexible, primitive backbone that forms the main body support of sea squirt larvae and some other marine animals.

An axial mesodermal tissue found in embryonic stages of all chordates and protochordates, often regressing as maturity is approached. Typically a rod shaped mass of vacuolated cells. It lies immediately below the nerve cord and may provide mechanical strength to the embryo.

rigid cartilaginous rod found at the dorsal midline in all chordate embryos (it is their defining feature) derived from dorsal mesoderm (chordamesoderm). In vertebrates, it is typically a transient em [..]

the rod-shaped supporting axis found in the dorsal part of the embryos of all chordates, including vertebrates

A flexible rodlike structure that forms the main support of the body in the lowest chordates; a primitive spine A similar structure found in the embryos of vertebrates from which the spine develop [..]