rostrum


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Related to rostrum: rostra

rostrum

1. a platform or dais in front of an orchestra on which the conductor stands
2. another word for ram (sense 4)
3. the prow or beak of an ancient Roman ship
4. Biology Zoology a beak or beaklike part

Rostrum

 

(1) In fish, the anterior part of the neurocranium, located in front of the olfactory capsules. The rostrum is especially prominent as an integral cartilaginous process in Acipen-seridae, for example, in the stellate sturgeon (Acipenser stellatus) and Scaphirhyncus, and in chondrichthians, for example, in the sawfish and saw shark. In the smooth hound and other fish the rostrum is represented by three separate outgrowths. In the sawfish and saw shark large cutaneous teeth (placoid scales) are located along the sides of the rostrum; in these animals, the rostrum resembles a saw and serves as a weapon of defense and attack. In the majority of Batoidei the anterior edges of the pectoral fins are attached to the rostrum. The rostrum is reduced in many contemporary bony fishes and in terrestrial vertebrates.

(2) In reptiles and birds, the anterior process of the basisphe-noid bone. The rostrum is formed by the concrescence of the integumentary sphenoid bone to the basisphenoid bone.

rostrum

[′rä·strəm]
(biology)
A beak or beaklike process.

rostrum

A platform, elevated area, pulpit, or the like for addressing an audience.
References in periodicals archive ?
Table 4 shows the rostrum lift and drag components pertaining to the contributions from pressure and viscous forces, as well as the integrated total lift and drag force over the entire rostrum surface (see (2)-(3)).
Remarks.--The specimen mostly consists of the rostrum, lower jaws, and a dorso-ventrally crushed neurocranium (Figs.
Small juveniles presented clear differences between species in the shape and position of the rostrum with respect to the segments and the flagellum of the antennule.
After tea the topics session was in the very capable hands of David Logan whose victims included Michael Dickie, Ronnie Callender, Phil Kenyon, David Bell, Allan Collins and George Gilhooly.They tackled a wide range of topics such as"How to stay dry on the golf course","fizzy drinks","diesel v electric cars","making a movie", "excursion to the Far East"and "mannerisms at the rostrum".
Product Sub-Category: Repair of e-station (smart rostrum)
At one point after Arroyo's election, she went up the speaker's rostrum and tried to address the plenary, but the audio connection of the microphones was unavailable.
'I am sure the women of my country would not misbehave in a court in this manner,' said Justice Saqib, and called up the woman who beat the rostrum during the rumpus, telling her to tender unconditional apology.
During the course of hearing, Defence Secretary retired Lt Gen Zamir Hussain appeared before the court and remained seated till the time the court called him to the rostrum.
CJP stopped Advocate General Sindh (AGS) from giving arguments on rostrum.
Ben Heagren impressed and just missed out on the rostrum on 13 points.
PESHAWAR -- Prime Minister Mohammad Nawaz Sharif who came here Friday to attend and address centennial celebration of Islamic College Peshawar directed to remove bulletproof rostrum installed for him as part of security measures.
Cemil Ecicek calls Mustafa Balbay to rostrum for oath