taxonomy; science of classification
to say in other words; to put another way; to express in different words; to reword; to rephrase
advance; moving forward; progress
to be of benefit; to be useful; to be good for you
rapid increase; proliferation; surge; explosion
cranial dura mater; cerebral dura mater; dura mater encephali
frank; candid; straightforward; openhearted; direct; outspoken
pathfinder; trailblazer; early settler; pioneer; founder; originator
lacking a plan; haphazard
from the beginning; without hesitation; flatly (e.g. refusing); entirely; completely
heel (of foot, shoe, stocking, etc.)
gathering; meeting; assembly; collection; attendance
collecting; accumulating; collection (of art, stamps, insects, etc.); garbage collection; waste collection
to line up; to set up; to enumerate; to itemize; to be equal (to); to compare well (with)
ground-breaking; revolutionary; unprecedented; epoch-making
to corner; to drive to the wall; to run down; to track down; to chase after
to connect; to correlate; to associate; to relate; to link
variation; rogue (something)
tumor; tumour; neoplasm; neoplasia
strange; rare; novel; curious
experiments using animals; in-vivo testing; animal testing
(not) in any way; (not) at all; (none) whatsoever; what kind of
intention; idea; inclination; wish
drawing and manual arts (school subject)
rate; ratio; comparatively; contrary to expectations
other than; except for; aside from; apart from; save for
outward appearance; exterior appearance; outward show; looks
common; ordinary; conventional; customary
winning a battle; victory; victorious battle
to dig; to excavate; to delve into; to dig up (e.g. vegetables); (for two men) to have anal sex