THYSANOPTERA n.
A division of insects, considered by some writers a distinct order, but regarded by others as belonging to the Hemiptera. They are all of small size, and have narrow, broadly fringed wings with rudimentary nervures. Most of the species feed upon the juices of plants, and some, as those which attack grain, are very inju…
TRACTARIAN n.
One of the writers of the Oxford tracts, called "Tracts for the Times," issued during the period 1833-1841, in which series of papers the sacramental system and authority of the Church, and the value of tradition, were brought into prominence. Also, a member of the High Church party, holding generally the principles of…
TUNICATA n.
m, intermediate, in some respects, between the invertebrates and vertebrates, and by some writers united with the latter. They were formerly classed with acephalous mollusks. The body is usually covered with a firm external tunic, consisting in part of cellulose, and having two openings, one for the entrance and one fo…