Arytenoid
a rod
belemiond or scaphoid
A cube is hardly an irregularly shaped object. Measuring it is the defining term of area and volume. A cube is defined as having twelve sides, all lengths uniform, all angles right angles. If the length of any side is 'a' then area = 6*a*a volume = a*a*a
cylinder
A hexagon.
element
scaphoid
a rod
belemiond or scaphoid
The term cylindrical refers to an object that is cylinder shaped. Examples of this term would be items such as food cans. Cylinders are tubed shaped objects with circles closing off both ends.
The term 'navicular' is used to describe something as boat shaped. The navicular bone in the lower ankle structure is one such example.
aerofoil
I think you are talking about "induction". The term is generally used when referring to the use of electricity or magnets. Resonance
"Thumb-long" is a descriptive term used to indicate the length of an object, typically referring to something being the size of an average human thumb. It is a rough estimate used to give a general idea of the object's length.
A term referring to locating ancient artifacts
Ovoid is the botanical term describing an egg-shaped fruit
'the' is the definite article, as in 'the coat. You are referring to a specific coat. 'A/an' are the indefinite articles, as in 'a coat'. You are referring to any coat. 'an' is used when the noun begins with the vowels and 'h' as, in 'an object' or ' an horse' ( NOT 'a horse'.