What do we mean when we say "stronger?" Part 1

As I was driving from West Virginia yesterday, I was suffering from sciatica because of sitting for nearly 8 hours straight. During my new regular weekly workout, I have been focusing on strengthening my hips, legs and lower back to try and remedy the problem that is causing me to not sleep through the night. During one particular workout recently, I was remembering chanting... saying to myself, "I am getting stronger every day." I used this as an affirmation. Deep from within, a notion swelled in me.

What does "stronger" really mean?

Strong is a word to describe something being less penitrable? How does that relate to me? I looked up strong in the dictionary and found it to be, not enlightening:

strong
adj. strong·er, strong·est

1. 1. Physically powerful; capable of exerting great physical force.
   2. Marked by great physical power: a strong blow to the head.
2. In good or sound health; robust: a strong constitution; a strong heart.
3. Economically or financially sound or thriving: a strong economy.
4. Having force of character, will, morality, or intelligence: a strong personality.
5. Having or showing ability or achievement in a specified field: students who are strong in chemistry.
6. Capable of the effective exercise of authority: a strong leader.
7. 1. Capable of withstanding force or wear; solid, tough, or firm: a strong building; a strong fabric.
   2. Having great binding strength: a strong adhesive.
8. Not easily captured or defeated: a strong flank; a strong defense.
9. Not easily upset; resistant to harmful or unpleasant influences: strong nerves; a strong stomach.
10. Having force or rapidity of motion: a strong current.
11. 1. Persuasive, effective, and cogent: a strong argument.
    2. Forceful and pointed; emphatic: a strong statement.
    3. Forthright and explicit, often offensively so: strong language.
12. Extreme; drastic: had to resort to strong measures.
13. Having force of conviction or feeling; uncompromising: strong faith; a strong supporter.
14. Intense in degree or quality: a strong emotion; strong motivation.
15. 1. Having an intense or offensive effect on the senses: strong light; strong vinegar; strong cologne.
    2. Clear and loud: a strong voice.
    3. Readily noticeable; remarkable: a strong resemblance; a strong contrast.
    4. Readily detected or received: a strong radio signal.
16. 1. Having a high concentration of an essential or active ingredient: mixed a strong solution of bleach and water.
    2. Containing a considerable percentage of alcohol: strong punch.
    3. Powerfully effective: a strong painkiller.
17. Characterized by a high degree of saturation.
18. Having a specified number of units or members: a military force 100,000 strong.
19. Marked by steady or rising prices: a strong market.
20. Linguistics.
    1. Of or relating to those verbs in Germanic languages that form their past tense by a change in stem vowel, and their past participles by a change in stem vowel and sometimes by adding the suffix -(e)n, as sing, sang, sung or tear, tore, torn.
    2. Of or relating to the inflection of nouns or adjectives in Germanic languages with endings that historically did not contain a suffix with an n.
21. Stressed or accented in pronunciation or poetic meter. Used of a word or syllable.

So if I am stronger am I more powerful? Am I healthier? Am I more clear thinking? Does being stronger allow me to have an advantage over others? In what ways? If I am stronger in my faith does that mean I beleive more? Can you believe less? you either believe or not, right?

Stronger seems to be a word that describes syran wrap and laundry detergent, odors and armys, appearances and emotions.

But in an etherial sense, how do we know if we want to be stronger, or can get stronger? Why would we want that in the first place. This indicates a that we are not made the way we are.

I would encourage feedback about the concept of being "stronger." There is a second part to this...