Definitions for beak-head
beak-head

WikipediaRate this definition:0.0 / 0 votes

1. beak-head

   Tuatara (Sphenodon punctatus) are reptiles endemic to New Zealand. Despite their close resemblance to lizards, they are part of a distinct lineage, the order Rhynchocephalia. The name tuatara is derived from the Māori language and means "peaks on the back". The single extant species of tuatara is the only surviving member of its order. Rhynchocephalians originated during the Triassic (~250 million years ago), reached worldwide distribution and peak diversity during the Jurassic and, with the exception of tuatara, were extinct by 60 million years ago. Their closest living relatives are squamates (lizards and snakes). For this reason, tuatara are of interest in the study of the evolution of lizards and snakes, and for the reconstruction of the appearance and habits of the earliest diapsids, a group of amniote tetrapods that also includes dinosaurs (including birds) and crocodilians. Tuatara are greenish brown and grey, and measure up to 80 cm (31 in) from head to tail-tip and weigh up to 1.3 kg (2.9 lb) with a spiny crest along the back, especially pronounced in males. They have two rows of teeth in the upper jaw overlapping one row on the lower jaw, which is unique among living species. They are able to hear, although no external ear is present, and have unique features in their skeleton, some of them apparently evolutionarily retained from fish. Tuatara are sometimes referred to as "living fossils", which has generated significant scientific debate. This term is currently deprecated among paleontologists and evolutionary biologists. Although tuatara have preserved the morphological characteristics of their Mesozoic ancestors (240–230 million years ago), there is no evidence of a continuous fossil record to support this. The species has between 5 and 6 billion base pairs of DNA sequence, nearly twice that of humans.The tuatara (Sphenodon punctatus) has been protected by law since 1895. A second species, the Brothers Island tuatara S. guntheri, (Buller, 1877), was recognised in 1989, but since 2009 it has been reclassified as a subspecies (S.p. guntheri). Tuatara, like many of New Zealand's native animals, are threatened by habitat loss and introduced predators, such as the Polynesian rat (Rattus exulans). Tuatara were extinct on the mainland, with the remaining populations confined to 32 offshore islands until the first North Island release into the heavily fenced and monitored Karori Wildlife Sanctuary (now named "Zealandia") in 2005.During routine maintenance work at Zealandia in late 2008, a tuatara nest was uncovered, with a hatchling found the following autumn. This is thought to be the first case of tuatara successfully breeding in the wild on New Zealand's North Island in over 200 years.

Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. beak-head

   A piece of brass like a beak, fixed at the head of the ancient galleys, with which they pierced their enemies. Pisæus is said to have first added the rostrum or beak-head. Later it was a small platform at the fore part of the upper deck, but the term is now applied to that part without the ship before the forecastle, or knee of the head, which is fastened to the stem and is supported by the main knee. Latterly, to meet steam propulsion, the whole of this is enlarged, strengthened, and armed with iron plates, and thus the armed stem revives the ancient strategy in sea-fights. Shakspeare makes Ariel thus allude to the beak in the "Tempest:"-- "I boarded the king's ship; now on the beak, Now in the waist, the deck, in every cabin, I flam'd amazement."

How to pronounce beak-head?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say beak-head in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of beak-head in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of beak-head in Pythagorean Numerology is: 1

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Beak-Head
2. ^ Dictionary of Nautical Terms
   https://www.gutenberg.org/cache/epub/26000/pg26000-images.html#:~:text=beak-head