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.
The chart shows which elements are most abundant by mass and by volume. As you can see, Oxygen is the most abundant element in the Earth's crust (lithosphere) by both mass and volume. Silicon is the second most abundant element by mass.Potassium is the second most abundant by volume. All of the different amounts are right on the chart, so there is no need to memorize them. The most important thing to realize is that Oxygen is by far the most abundant element in the Earth's crust.Remember that this refers to Oxygen in compounds, not Oxygen as a gas! This Oxygen is present as part of solid chemical compounds in the rocks and soil.he most important thing to realize is that Oxygen is by far the most abundant element in the Earth's crust. Remember that this refers to Oxygen in compounds, not Oxygen as a gas! This Oxygen is present as part of solid chemical compounds in the rocks and soil.