week 5

vocabulary  unit 4   ch. 7 to 8

1 assume  v

Definition : to take for granted or without proof

2 diameter  n

Definition : the length of such a line

3 ecosystem  n

Definition : a system, or a group of interconnected elements, formed by the interaction of a community of organisms with their environment

4 emerge  v

Definition : to come forth into view or notice, as from concealment or obscurity

5 frontier  n

Definition : the part of a country that borders another country; boundary

6 giant  adj

Definition : unusually large, great, or strong; gigantic; huge

7 limb  n

Definition : a part or member of an animal body distinct from the head and trunk, as a leg, arm, or wing

8 manage to  v

Definition : to bring about or succeed in accomplishing

9 penetrate  v

Definition : to pierce or pass into or through

10 rot   v

Definition : to undergo decomposition

11 alert  adj

Definition : fully aware and attentive

12 bush  n

Definition : a low plant with many branches that arise from or near the ground

13 cylinder  n

Definition : a surface or solid bounded by two parallel planes and generated by a straight line moving parallel to the given planes

14 desperately  adv

Definition : having an urgent need, desire

15 foliage   n

Definition : the leaves of a plant

16 gap  n

Definition : a break or opening, as in a fence

17 grab  v

Definition : to seize suddenly or quickly

18 gravity  n

Definition : heaviness or weight

19 layer  n

Definition : a thickness of some material laid on or spread over a surface

20 lean  v

Definition : to incline or bend from a vertical position

21 leap  v

Definition : to spring through the air from one point or position to another; jump

22 shrug  v

Definition : to raise and contract (the shoulders), expressing indifference, disdain

23 swing  v

Definition : to cause to move to and from

24 tangle  v

Definition : to bring together into a mass of confusedly interlaced

25 work away  v

Definition : to study or examine thoroughly