noun. 1  1A line or set of lines enclosing or indicating the shape of an object in a sketch or diagram. âthe chalked outline of a human bodyâ. 2  2A general description or plan showing the essential features of something but not the detail. âan outline of parliamentary procedureâ.
Erythrocytes, or red blood cells, are the most abundant of the  formed elements of the blood.The other formed elements are  leukocytes (white blood cells) and thrombocytes â¦ (platelets). erythrocytes (red blood cells) Erythrocytes (red blood cells or RBCs) platelets, for about 250,000-500,000 per mm3 of blood.rythrocytes, or red blood cells, are the most abundant of the  formed elements of the blood.
Answer: The most abundant element in the universe is hydrogen, which makes up about 3/4 of all matter! Helium makes up most of the remaining 25%. Oxygen is the third most abundant element in the universe. All of the other elements are relatively rare. The chemical composition of the earth is quite a bit different from that of the universe. The most abundant element in the earth's crust is oxygen, making up 46.6% of the earth's mass. Silicon is the second most abundant element (27.7%), followed by aluminum (8.1%), iron (5.0%), calcium (3.6%), sodium (2.8%), potassium (2.6%). and magnesium (2.1%). These eight elements account for approximately 98.5% of the total mass of the earth's crust.