L’encordement utilise le nœud en huit.

Because encordement begins with a vowel sound, French uses elision: le or la becomes l’ before a vowel or a mute h.

So:

• le encordement → l’encordement

This is very common in French:

• l’homme
• l’école
• l’idée

Encordement is a noun. In climbing, it refers to being tied into the rope, or the act/system of roping up.

It comes from encorder, meaning to rope up or to tie onto a rope.

So depending on context, l’encordement can mean things like:

• the tying-in method
• roping up
• the rope setup between climbers

Because utilise is a conjugated verb, while utiliser is the infinitive.

Here, l’encordement is the subject, so the sentence needs a finite verb:

• L’encordement utilise... = The roping-up uses...

Utilise is the 3rd person singular present form of utiliser, because l’encordement is singular.

Conjugation in the present:

• j’utilise
• tu utilises
• il/elle/on utilise

Because nœud is a singular masculine noun, so it takes le in the definite form.

• le nœud = the knot
• un nœud = a knot

In this sentence, le nœud en huit means a specific knot type, so the figure-eight knot is natural.

Literally, it means knot in eight.

French often uses en to describe shape, form, or configuration:

• en cercle = in a circle / circular
• en ligne = in a line
• en spirale = spiral-shaped

So nœud en huit means a knot shaped like an 8, which English calls a figure-eight knot.

Because en is the normal preposition here for expressing form or shape.

So:

• en huit = in the shape of an eight

This is just the standard French way to say it. It is not about possession (de) or number of parts (à huit). It describes the knot’s form.

Nœud is pronounced roughly like the French sound neu.

A helpful approximation for English speakers is something like:

• nuh with rounded lips
• or a bit like the vowel in British bird, but with the lips more rounded

The œu spelling often gives this sound in French.

Also:

• the final d is silent
• so you do not pronounce it like node

Πis a ligature: historically a combination of o and e written together.

In modern French, you mainly need to recognize it in spelling and pronunciation. In nœud, it is pronounced as the eu/œu vowel sound.

Other words with similar spelling include:

• œuf
• œuvre
• cœur

For a learner, the most important thing is simply to recognize nœud as one word and learn its pronunciation as a whole.

Yes. The structure is very standard:

• L’encordement = subject
• utilise = verb
• le nœud en huit = direct object

So it follows the basic French pattern:

Subject + Verb + Object

That makes it a straightforward declarative sentence.

Yes, but the meaning changes slightly.

• utilise le nœud en huit = uses the figure-eight knot
• utilise un nœud en huit = uses a figure-eight knot

With le, French often refers to the knot type in a general or standard sense, especially in technical explanations.

So in a climbing instruction context, le nœud en huit sounds natural because it refers to the standard knot being discussed.

Normally, it is understood as a general statement in the present tense.

French present tense often covers:

• general truths
• habits
• instructions
• what is happening now

Here, the most natural reading is something like:

• The tying-in method uses the figure-eight knot
• For tying in, the figure-eight knot is used

So this is probably instructional or descriptive, not necessarily about one single action at this moment.