protrusible's Usage Examples:

This may be associated with mud-eating habits; but it is not wholly certain that this is the case; for in Chaetogaster and Agriodrilus, which are predaceous worms, there is no protrusible pharynx, though in the latter the oesophagus is thickened through its extent with muscular fibres.

From this junction there proceeds an oviduct or " uterus " (paired or single) which before opening to the exterior expands to form a muscular protrusible pouch - the bursa copulatrix.

- A protrusible proboscis exists, but there are no jaws.

The male organs are usually a testis, a large seminal bladder and a protrusible penis.

The terminal part of the male ducts may be protrusible and act as an intromittent organ, or this function may be discharged by some of the appendages, as, for instance, in the Brachyura.

There is no armed protrusible pharynx, such as exists in some other Chaetopods.

Leeches without biting jaws possess a protrusible proboscis, and generally engulf their prey, as does the horse leech when it attacks earthworms.

Lankester as a branch of the Cephalopoda, chiefly on account of the protrusible suckerbearing processes at the anterior end of Pneumonoderma.

Appendages of 1st pair large, chelate, bisegmented, articulated to the sides of the head-shield; appendages of 2nd pair simple, pediform, with protrusible (?The body is ringed, and often has circles of spines, which are continued into the slightly protrusible pharynx.

The male ducts are either one pair or two pairs, which open by a common and complicated efferent terminal apparatus furnished with a protrusible penis.

Piercing jaws modified and reduced, a tubular, protrusible suckingtrunk being developed; mouth with hooks.

Thus in the recently discovered arctic genus Prosorhynchus the muscular and glandular extremity is protrusible, but in the allied Gasterostomum this organ is represented by a sucker with fimbriated or tentacular margins.

Sir William Webb Follett >>The genus Rana may be defined as firmisternal Ecaudata with cylindrical transverse processes to the sacral vertebra, teeth in the upper jaw and on the vomer, a protrusible tongue which is free and forked behind, a horizontal pupil and more or less webbed toes.

Synonyms:

extensible, protrusile, extensile,

Antonyms:

nonextensile, inextensible, nonprotractile,