uniramous

[ yoo-nuh-rey-muh s ]

/ ˌyu nəˈreɪ məs /

Biology. having one branch.

Origin of uniramous

uni- + ramous

The antennules are uniramous, the others biramous, and all three pairs are used in swimming.

The Appendages, Anatomy, and Relationships of Trilobites |Percy Edward Raymond
The anterior of the three pairs of Nauplius appendages (At1) is uniramous, and the two posterior (At2, and md) are biramous.

The Works of Francis Maitland Balfour, Volume II (of 4) |Francis Maitland Balfour
The anterior of these (at 1) is uniramous, and usually formed of three joints which bear bristles on their under surface.

The Works of Francis Maitland Balfour, Volume II (of 4) |Francis Maitland Balfour
The adult chilopod lacks the antennules, and all of the other appendages, with the exception of the maxillul, are uniramous.

The Appendages, Anatomy, and Relationships of Trilobites |Percy Edward Raymond

The fourth post-oral limb is a lobed plate, usually not distinctly segmented, and the fifth a uniramous pediform leg.

The Appendages, Anatomy, and Relationships of Trilobites |Percy Edward Raymond

uniramous

/ (ˌjuːnɪˈreɪməs) /

(esp of the appendages of crustaceans) consisting of a single branch; undivided Also: uniramose (ˌjuːnɪˈreɪməʊs, -ræˈməʊs)