### element | point:

Crux
* are constellations
* lies on the Milky Way and is surrounded by the constellation Centaurus on three sides.

Cusp
* are flaps.
* are part of heart valves
  - tooths
  - points
* are the borders between the twelve astrological signs
  - elevated points of teeth, and are shown as pink circles

### element | point | cusp:

Beach cusps
* are shoreline features made up of various grades of sediment that form an arc pattern
  - formations made up of various grades of sediment in an arc pattern
  - wavy rolling surfaces that form in the sand in an arc pattern
* give the beach a wavy or undulating appearance.

Deadline
* are a way of life in the printing business
  - also a fact of life in advertising
  - an ingrained part of most cultures
  - deadlines
* are important in journalism
  - the mass communication profession
  - useful things that focus the mind
  - what they say, deadlines
* can help to concentrate minds.
* fall on the last days of odd-numbered months.

Discount point
* are a way to lower the interest rate by, in effect, paying some interest in advance.
* fee paid in advance to lower the interest rate over the life of a loan.
* refers to the percentage discount applied to impression or click-thru charges.

High point
* are part of experience
  - parts
* refers to the high an low points that occur in a sequence of movement.

Inflection point
* are locations at which the curvature changes direction
  - the point on the curve where the curvature is zero
* occur where the second derivative of the function is equal to zero.

### element | point:

Strange attractor
* Some strange attractors have a fractal structure.
* act like normal attractors in that they are confined to a finite area.
* are attractors which are themselves fractal
  - different, they are an integral part of chaos
  - extremely complex, and they describe extremely complex behavior
  - mathematical objects which exhibit somewhat unusual properties
  - the order within the chaos that describes the essence of all chaos itself
* delineate the tendency of subsequent generations to resemble their ancestors.
* exist even in low dimensional systems.
* is attractor.

### element | point:

Trigger point
* activated by sleep position can cause impaired sleep.
* are common in fibromyalgia, sprains, and other muscle or joint problems
  - highly irritable spots in a muscle, and contribute critically to chronic pain
  - involuntary contracted muscle fibers that are a by-product of muscular activity
  - painful to the touch, and refer pain to other parts of the body
  - persistent and painful muscle spasms
  - spots of hard, ropy tissue that are sore when touched
* can cause dysfunction in muscles at a distance
  - occur in almost any muscle
* differ from tender points in that they refer the pain to other parts of the body.
* have a number of causes such as overuse, injury, illness or even everyday stress.
* refer pain both locally and distantly
  - to other parts of the body in characteristic patterns

### element:

Radioactive element
* All radioactive elements decay at the same rate
  - disintegrate according to their specific half life
* Some radioactive elements emit gamma rays as a matter of course
* are so-called because they decay
  - unstable and break apart into pieces releasing energy in the process
* can appear in water supplies as a result of naturally occurring contamination
  - emit several types of radiation
* contain disintegrating nuclei and emit alpha, beta, and gamma rays.
* decay at different rates
  - gradually into other elements
  - into other elements at a known rate
  - via first-order kinetics
* give off radiation that is harmful to plants and animals.
* remain in our bodies for a long time.
* vary greatly.