1. #63 astron – Greek – star
astronomer (onoma – name)– one who names the stars asteroid (eidos – form)– in the form of a star astrodome – covered stadium where sports and stars perform

2. #64 stella – Latin – star
stellar – pertaining to stars or a star performance
constellation (cum – together)– group of stars
interstellar (inter – between) – between the stars

3. #65 dendron – Greek – tree
dendrophile (philia – love)– lover of trees dendrometer (metron – measure) – instrument for measuring the height and diameter of trees
dendrolite (lithos – stone) – petrified or fossil trees

4. #66 arbor – Latin – tree
arboretum – public garden where trees are cultivated and exhibited arboraceous– full of trees
arboriculture (cultura – tending) – cultivation of trees and shrubs

5. #67 chronos – Greek – time
chronometer (metron – measure) – device to measure time chronic – over a period of time
chronological (logos – word, study) – relate events in time sequence

6. #68 tempus – Latin – time
temporary – for a limited time extemporaneous (ex – out) – to speak without the time for preparation contemporary (cum – together, with) – with the times, current

7. #69 para – Greek – beside, along with
parachute (L. cadere – to fall) – goes along with you as you fall parenthesis (thesis – place) – statement placed beside (or within) the main sentence parallel (allos – other) – lying along side another line but not touching

8. #70 inter – Latin – between, among, amid
international (natio – nation, race, kindred) – between nations
interaction (ago, actum – act) – discussion or action between people
intervene (venio, ventum – come) – come between

9. #71 techne – Greek – art, skill
technology (logos – word, study) – study of how to do things
technician – one who is skilled in details of an art or subject
architect (archi – chief, master) – master builder

10. #72 artis – Latin – art, skill
artificial (facio, factum – make) – made by man artillery (artiller (F.) – equip) – equipment for war inert (in – not) – not skilled, inactive

11. #73 bios – Greek – life
biology (logos – study) – study of life biography (graph – write, draw) – written life story antibiotic (anti – against) – against living forms which invade the body

12. #74 vivo – Latin – live
revive (re – back, again) – come back to life vivacity – liveliness, vigor
vivid– lively

13. #75 mikros – Greek – small microbe – (bios – life) – tiny form of life
micron – unit of length 1/1000 of 1 millimeter
microcosm – (cosmos – world) – a tiny world